diff --git a/cmd/geth/admin.go b/cmd/geth/admin.go
index 45decfa7f5..20654c0cfd 100644
--- a/cmd/geth/admin.go
+++ b/cmd/geth/admin.go
@@ -59,6 +59,7 @@ func (js *jsre) adminBindings() {
 	cinfo.Set("stop", js.stopNatSpec)
 	cinfo.Set("newRegistry", js.newRegistry)
 	cinfo.Set("get", js.getContractInfo)
+	cinfo.Set("saveInfo", js.saveInfo)
 	cinfo.Set("register", js.register)
 	cinfo.Set("registerUrl", js.registerUrl)
 	// cinfo.Set("verify", js.verify)
@@ -678,12 +679,18 @@ func (js *jsre) waitForBlocks(call otto.FunctionCall) otto.Value {
 	}
 
 	if args == 0 {
-		height = js.xeth.CurrentBlock().Number()
-		height.Add(height, common.Big1)
+		height = new(big.Int).Add(js.xeth.CurrentBlock().Number(), common.Big1)
 	}
+	height, err = waitForBlocks(js.wait, height, timer)
+	if err != nil {
+		return otto.UndefinedValue()
+	}
+	v, _ := call.Otto.ToValue(height.Uint64())
+	return v
+}
 
-	wait := js.wait
-	js.wait <- height
+func waitForBlocks(wait chan *big.Int, height *big.Int, timer <-chan time.Time) (newHeight *big.Int, err error) {
+	wait <- height
 	select {
 	case <-timer:
 		// if times out make sure the xeth loop does not block
@@ -693,11 +700,10 @@ func (js *jsre) waitForBlocks(call otto.FunctionCall) otto.Value {
 			case <-wait:
 			}
 		}()
-		return otto.UndefinedValue()
-	case height = <-wait:
+		return nil, fmt.Errorf("timeout")
+	case newHeight = <-wait:
 	}
-	v, _ := call.Otto.ToValue(height.Uint64())
-	return v
+	return
 }
 
 func (js *jsre) sleep(call otto.FunctionCall) otto.Value {
@@ -729,23 +735,49 @@ func (js *jsre) setSolc(call otto.FunctionCall) otto.Value {
 }
 
 func (js *jsre) register(call otto.FunctionCall) otto.Value {
-	if len(call.ArgumentList) != 4 {
-		fmt.Println("requires 4 arguments: admin.contractInfo.register(fromaddress, contractaddress, contract, filename)")
-		return otto.UndefinedValue()
+	if len(call.ArgumentList) != 3 {
+		fmt.Println("requires 3 arguments: admin.contractInfo.register(fromaddress, contractaddress, contenthash)")
+		return otto.FalseValue()
 	}
 	sender, err := call.Argument(0).ToString()
 	if err != nil {
 		fmt.Println(err)
-		return otto.UndefinedValue()
+		return otto.FalseValue()
 	}
 
 	address, err := call.Argument(1).ToString()
 	if err != nil {
 		fmt.Println(err)
-		return otto.UndefinedValue()
+		return otto.FalseValue()
 	}
 
-	raw, err := call.Argument(2).Export()
+	contentHashHex, err := call.Argument(2).ToString()
+	if err != nil {
+		fmt.Println(err)
+		return otto.FalseValue()
+	}
+
+	// sender and contract address are passed as hex strings
+	codeb := js.xeth.CodeAtBytes(address)
+	codeHash := common.BytesToHash(crypto.Sha3(codeb))
+	contentHash := common.HexToHash(contentHashHex)
+	registry := resolver.New(js.xeth)
+
+	_, err = registry.RegisterContentHash(common.HexToAddress(sender), codeHash, contentHash)
+	if err != nil {
+		fmt.Println(err)
+		return otto.FalseValue()
+	}
+
+	return otto.TrueValue()
+}
+
+func (js *jsre) saveInfo(call otto.FunctionCall) otto.Value {
+	if len(call.ArgumentList) != 2 {
+		fmt.Println("requires 2 arguments: admin.contractInfo.saveInfo(contract.info, filename)")
+		return otto.UndefinedValue()
+	}
+	raw, err := call.Argument(0).Export()
 	if err != nil {
 		fmt.Println(err)
 		return otto.UndefinedValue()
@@ -755,36 +787,20 @@ func (js *jsre) register(call otto.FunctionCall) otto.Value {
 		fmt.Println(err)
 		return otto.UndefinedValue()
 	}
-	var contract compiler.Contract
-	err = json.Unmarshal(jsonraw, &contract)
+	var contractInfo compiler.ContractInfo
+	err = json.Unmarshal(jsonraw, &contractInfo)
 	if err != nil {
 		fmt.Println(err)
 		return otto.UndefinedValue()
 	}
 
-	filename, err := call.Argument(3).ToString()
+	filename, err := call.Argument(1).ToString()
 	if err != nil {
 		fmt.Println(err)
 		return otto.UndefinedValue()
 	}
 
-	contenthash, err := compiler.ExtractInfo(&contract, filename)
-	if err != nil {
-		fmt.Println(err)
-		return otto.UndefinedValue()
-	}
-	// sender and contract address are passed as hex strings
-	codeb := js.xeth.CodeAtBytes(address)
-	codehash := common.BytesToHash(crypto.Sha3(codeb))
-
-	if err != nil {
-		fmt.Println(err)
-		return otto.UndefinedValue()
-	}
-
-	registry := resolver.New(js.xeth)
-
-	_, err = registry.RegisterContentHash(common.HexToAddress(sender), codehash, contenthash)
+	contenthash, err := compiler.SaveInfo(&contractInfo, filename)
 	if err != nil {
 		fmt.Println(err)
 		return otto.UndefinedValue()
@@ -796,7 +812,7 @@ func (js *jsre) register(call otto.FunctionCall) otto.Value {
 
 func (js *jsre) registerUrl(call otto.FunctionCall) otto.Value {
 	if len(call.ArgumentList) != 3 {
-		fmt.Println("requires 3 arguments: admin.contractInfo.register(fromaddress, contenthash, filename)")
+		fmt.Println("requires 3 arguments: admin.contractInfo.registerUrl(fromaddress, contenthash, url)")
 		return otto.FalseValue()
 	}
 	sender, err := call.Argument(0).ToString()
@@ -818,7 +834,6 @@ func (js *jsre) registerUrl(call otto.FunctionCall) otto.Value {
 	}
 
 	registry := resolver.New(js.xeth)
-
 	_, err = registry.RegisterUrl(common.HexToAddress(sender), common.HexToHash(contenthash), url)
 	if err != nil {
 		fmt.Println(err)
@@ -830,7 +845,7 @@ func (js *jsre) registerUrl(call otto.FunctionCall) otto.Value {
 
 func (js *jsre) getContractInfo(call otto.FunctionCall) otto.Value {
 	if len(call.ArgumentList) != 1 {
-		fmt.Println("requires 1 argument: admin.contractInfo.register(contractaddress)")
+		fmt.Println("requires 1 argument: admin.contractInfo.get(contractaddress)")
 		return otto.FalseValue()
 	}
 	addr, err := call.Argument(0).ToString()
diff --git a/cmd/geth/js.go b/cmd/geth/js.go
index 24daf6f583..216c5e3500 100644
--- a/cmd/geth/js.go
+++ b/cmd/geth/js.go
@@ -85,6 +85,7 @@ func newJSRE(ethereum *eth.Ethereum, libPath, corsDomain string, bzzEnabled bool
 	js.xeth = xeth.New(ethereum, f)
 	js.wait = js.xeth.UpdateState()
 	js.re = re.New(libPath)
+	// js.apiBindings(js.xeth)
 	js.apiBindings(f)
 	js.adminBindings()
 	if bzzEnabled {
@@ -113,6 +114,7 @@ func newJSRE(ethereum *eth.Ethereum, libPath, corsDomain string, bzzEnabled bool
 
 func (js *jsre) apiBindings(f xeth.Frontend) {
 	xe := xeth.New(js.ethereum, f)
+	// func (js *jsre) apiBindings(xe *xeth.XEth) {
 	ethApi := rpc.NewEthereumApi(xe)
 	jeth := rpc.NewJeth(ethApi, js.re)
 
diff --git a/cmd/geth/js_test.go b/cmd/geth/js_test.go
index d6d4e05fd0..95a9b97afc 100644
--- a/cmd/geth/js_test.go
+++ b/cmd/geth/js_test.go
@@ -3,12 +3,14 @@ package main
 import (
 	"fmt"
 	"io/ioutil"
+	"math/big"
 	"os"
 	"path/filepath"
 	"regexp"
 	"runtime"
 	"strconv"
 	"testing"
+	"time"
 
 	"github.com/ethereum/go-ethereum/accounts"
 	"github.com/ethereum/go-ethereum/common"
@@ -17,7 +19,6 @@ import (
 	"github.com/ethereum/go-ethereum/common/natspec"
 	"github.com/ethereum/go-ethereum/common/resolver"
 	"github.com/ethereum/go-ethereum/core"
-	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/eth"
 )
@@ -41,7 +42,6 @@ var (
 
 type testjethre struct {
 	*jsre
-	stateDb     *state.StateDB
 	lastConfirm string
 	ds          *docserver.DocServer
 }
@@ -79,6 +79,7 @@ func testJEthRE(t *testing.T) (string, *testjethre, *eth.Ethereum) {
 		MaxPeers:       0,
 		Name:           "test",
 		SolcPath:       testSolcPath,
+		PowTest:        true,
 	})
 	if err != nil {
 		t.Fatal("%v", err)
@@ -101,19 +102,12 @@ func testJEthRE(t *testing.T) (string, *testjethre, *eth.Ethereum) {
 
 	assetPath := filepath.Join(os.Getenv("GOPATH"), "src", "github.com", "ethereum", "go-ethereum", "cmd", "mist", "assets", "ext")
 	ds := docserver.New("/")
-	tf := &testjethre{ds: ds, stateDb: ethereum.ChainManager().State().Copy()}
+	tf := &testjethre{ds: ds}
 	repl := newJSRE(ethereum, assetPath, "", false, "", false, tf)
 	tf.jsre = repl
 	return tmp, tf, ethereum
 }
 
-// this line below is needed for transaction to be applied to the state in testing
-// the heavy lifing is done in XEth.ApplyTestTxs
-// this is fragile, overwriting xeth will result in
-// process leaking since xeth loops cannot quit safely
-// should be replaced by proper mining with testDAG for easy full integration tests
-// txc, self.xeth = self.xeth.ApplyTestTxs(self.xeth.repl.stateDb, coinbase, txc)
-
 func TestNodeInfo(t *testing.T) {
 	t.Skip("broken after p2p update")
 	tmp, repl, ethereum := testJEthRE(t)
@@ -257,12 +251,9 @@ func TestContract(t *testing.T) {
 	defer ethereum.Stop()
 	defer os.RemoveAll(tmp)
 
-	var txc uint64
 	coinbase := common.HexToAddress(testAddress)
 	resolver.New(repl.xeth).CreateContracts(coinbase)
-	// time.Sleep(1000 * time.Millisecond)
 
-	// checkEvalJSON(t, repl, `eth.getBlock("pending", true).transactions.length`, `2`)
 	source := `contract test {\n` +
 		"   /// @notice Will multiply `a` by 7." + `\n` +
 		`   function multiply(uint a) returns(uint d) {\n` +
@@ -270,14 +261,20 @@ func TestContract(t *testing.T) {
 		`   }\n` +
 		`}\n`
 
-	checkEvalJSON(t, repl, `admin.contractInfo.stop()`, `true`)
+	if checkEvalJSON(t, repl, `admin.contractInfo.stop()`, `true`) != nil {
+		return
+	}
 
 	contractInfo, err := ioutil.ReadFile("info_test.json")
 	if err != nil {
 		t.Fatalf("%v", err)
 	}
-	checkEvalJSON(t, repl, `primary = eth.accounts[0]`, `"`+testAddress+`"`)
-	checkEvalJSON(t, repl, `source = "`+source+`"`, `"`+source+`"`)
+	if checkEvalJSON(t, repl, `primary = eth.accounts[0]`, `"`+testAddress+`"`) != nil {
+		return
+	}
+	if checkEvalJSON(t, repl, `source = "`+source+`"`, `"`+source+`"`) != nil {
+		return
+	}
 
 	// if solc is found with right version, test it, otherwise read from file
 	sol, err := compiler.New("")
@@ -297,71 +294,156 @@ func TestContract(t *testing.T) {
 			t.Errorf("%v", err)
 		}
 	} else {
-		checkEvalJSON(t, repl, `contract = eth.compile.solidity(source).test`, string(contractInfo))
+		if checkEvalJSON(t, repl, `contract = eth.compile.solidity(source).test`, string(contractInfo)) != nil {
+			return
+		}
 	}
 
-	checkEvalJSON(t, repl, `contract.code`, `"0x605880600c6000396000f3006000357c010000000000000000000000000000000000000000000000000000000090048063c6888fa114602e57005b603d6004803590602001506047565b8060005260206000f35b60006007820290506053565b91905056"`)
+	if checkEvalJSON(t, repl, `contract.code`, `"0x605880600c6000396000f3006000357c010000000000000000000000000000000000000000000000000000000090048063c6888fa114602e57005b603d6004803590602001506047565b8060005260206000f35b60006007820290506053565b91905056"`) != nil {
+		return
+	}
 
-	checkEvalJSON(
+	if checkEvalJSON(
 		t, repl,
-		`contractaddress = eth.sendTransaction({from: primary, data: contract.code })`,
+		`contractaddress = eth.sendTransaction({from: primary, data: contract.code, gasPrice:"1000", gas:"100000", amount:100 })`,
 		`"0x291293d57e0a0ab47effe97c02577f90d9211567"`,
-	)
+	) != nil {
+		return
+	}
+
+	if !processTxs(repl, t, 7) {
+		return
+	}
 
 	callSetup := `abiDef = JSON.parse('[{"constant":false,"inputs":[{"name":"a","type":"uint256"}],"name":"multiply","outputs":[{"name":"d","type":"uint256"}],"type":"function"}]');
 Multiply7 = eth.contract(abiDef);
 multiply7 = Multiply7.at(contractaddress);
 `
-	// time.Sleep(1500 * time.Millisecond)
 	_, err = repl.re.Run(callSetup)
 	if err != nil {
 		t.Errorf("unexpected error setting up contract, got %v", err)
+		return
 	}
 
-	// checkEvalJSON(t, repl, `eth.getBlock("pending", true).transactions.length`, `3`)
-
-	// why is this sometimes failing?
-	// checkEvalJSON(t, repl, `multiply7.multiply.call(6)`, `42`)
 	expNotice := ""
 	if repl.lastConfirm != expNotice {
 		t.Errorf("incorrect confirmation message: expected %v, got %v", expNotice, repl.lastConfirm)
+		return
 	}
 
-	txc, repl.xeth = repl.xeth.ApplyTestTxs(repl.stateDb, coinbase, txc)
+	if checkEvalJSON(t, repl, `admin.contractInfo.start()`, `true`) != nil {
+		return
+	}
+	if checkEvalJSON(t, repl, `multiply7.multiply.sendTransaction(6, { from: primary })`, `undefined`) != nil {
+		return
+	}
+
+	if !processTxs(repl, t, 1) {
+		return
+	}
 
-	checkEvalJSON(t, repl, `admin.contractInfo.start()`, `true`)
-	checkEvalJSON(t, repl, `multiply7.multiply.sendTransaction(6, { from: primary, gas: "1000000", gasPrice: "100000" })`, `undefined`)
 	expNotice = `About to submit transaction (no NatSpec info found for contract: content hash not found for '0x87e2802265838c7f14bb69eecd2112911af6767907a702eeaa445239fb20711b'): {"params":[{"to":"0x291293d57e0a0ab47effe97c02577f90d9211567","data": "0xc6888fa10000000000000000000000000000000000000000000000000000000000000006"}]}`
 	if repl.lastConfirm != expNotice {
-		t.Errorf("incorrect confirmation message: expected %v, got %v", expNotice, repl.lastConfirm)
+		t.Errorf("incorrect confirmation message: expected\n%v, got\n%v", expNotice, repl.lastConfirm)
+		return
 	}
 
-	var contenthash = `"0x86d2b7cf1e72e9a7a3f8d96601f0151742a2f780f1526414304fbe413dc7f9bd"`
-	if sol != nil {
+	var contentHash = `"0x86d2b7cf1e72e9a7a3f8d96601f0151742a2f780f1526414304fbe413dc7f9bd"`
+	if sol != nil && solcVersion != sol.Version() {
 		modContractInfo := versionRE.ReplaceAll(contractInfo, []byte(`"compilerVersion":"`+sol.Version()+`"`))
-		_ = modContractInfo
-		// contenthash = crypto.Sha3(modContractInfo)
+		fmt.Printf("modified contractinfo:\n%s\n", modContractInfo)
+		contentHash = `"` + common.ToHex(crypto.Sha3([]byte(modContractInfo))) + `"`
 	}
-	checkEvalJSON(t, repl, `filename = "/tmp/info.json"`, `"/tmp/info.json"`)
-	checkEvalJSON(t, repl, `contenthash = admin.contractInfo.register(primary, contractaddress, contract, filename)`, contenthash)
-	checkEvalJSON(t, repl, `admin.contractInfo.registerUrl(primary, contenthash, "file://"+filename)`, `true`)
-	if err != nil {
-		t.Errorf("unexpected error registering, got %v", err)
+	if checkEvalJSON(t, repl, `filename = "/tmp/info.json"`, `"/tmp/info.json"`) != nil {
+		return
+	}
+	if checkEvalJSON(t, repl, `contentHash = admin.contractInfo.saveInfo(contract.info, filename)`, contentHash) != nil {
+		return
+	}
+	if checkEvalJSON(t, repl, `admin.contractInfo.register(primary, contractaddress, contentHash)`, `true`) != nil {
+		return
+	}
+	if checkEvalJSON(t, repl, `admin.contractInfo.registerUrl(primary, contentHash, "file://"+filename)`, `true`) != nil {
+		return
 	}
 
-	checkEvalJSON(t, repl, `admin.contractInfo.start()`, `true`)
+	if checkEvalJSON(t, repl, `admin.contractInfo.start()`, `true`) != nil {
+		return
+	}
 
-	// update state
-	txc, repl.xeth = repl.xeth.ApplyTestTxs(repl.stateDb, coinbase, txc)
+	if !processTxs(repl, t, 3) {
+		return
+	}
+
+	if checkEvalJSON(t, repl, `multiply7.multiply.sendTransaction(6, { from: primary })`, `undefined`) != nil {
+		return
+	}
+
+	if !processTxs(repl, t, 1) {
+		return
+	}
 
-	checkEvalJSON(t, repl, `multiply7.multiply.sendTransaction(6, { from: primary, gas: "1000000", gasPrice: "100000" })`, `undefined`)
 	expNotice = "Will multiply 6 by 7."
 	if repl.lastConfirm != expNotice {
-		t.Errorf("incorrect confirmation message: expected %v, got %v", expNotice, repl.lastConfirm)
+		t.Errorf("incorrect confirmation message: expected\n%v, got\n%v", expNotice, repl.lastConfirm)
+		return
 	}
 
 }
 
+func pendingTransactions(repl *testjethre, t *testing.T) (txc int64, err error) {
+	txs := repl.ethereum.TxPool().GetTransactions()
+	return int64(len(txs)), nil
+}
+
+func processTxs(repl *testjethre, t *testing.T, expTxc int) bool {
+	var txc int64
+	var err error
+	for i := 0; i < 50; i++ {
+		txc, err = pendingTransactions(repl, t)
+		if err != nil {
+			t.Errorf("unexpected error checking pending transactions: %v", err)
+			return false
+		}
+		if expTxc < int(txc) {
+			t.Errorf("too many pending transactions: expected %v, got %v", expTxc, txc)
+			return false
+		} else if expTxc == int(txc) {
+			break
+		}
+		time.Sleep(100 * time.Millisecond)
+	}
+	if int(txc) != expTxc {
+		t.Errorf("incorrect number of pending transactions, expected %v, got %v", expTxc, txc)
+		return false
+	}
+
+	err = repl.ethereum.StartMining(runtime.NumCPU())
+	if err != nil {
+		t.Errorf("unexpected error mining: %v", err)
+		return false
+	}
+	defer repl.ethereum.StopMining()
+
+	timer := time.NewTimer(100 * time.Second)
+	height := new(big.Int).Add(repl.xeth.CurrentBlock().Number(), big.NewInt(1))
+	_, err = waitForBlocks(repl.wait, height, timer.C)
+	if err != nil {
+		t.Errorf("error mining transactions: %v", err)
+		return false
+	}
+	txc, err = pendingTransactions(repl, t)
+	if err != nil {
+		t.Errorf("unexpected error checking pending transactions: %v", err)
+		return false
+	}
+	if txc != 0 {
+		t.Errorf("%d trasactions were not mined", txc)
+		return false
+	}
+	return true
+}
+
 func checkEvalJSON(t *testing.T, re *testjethre, expr, want string) error {
 	val, err := re.re.Run("JSON.stringify(" + expr + ")")
 	if err == nil && val.String() != want {
diff --git a/common/compiler/solidity.go b/common/compiler/solidity.go
index caf86974e5..4d5ffb473e 100644
--- a/common/compiler/solidity.go
+++ b/common/compiler/solidity.go
@@ -185,12 +185,12 @@ func (sol *Solidity) Compile(source string) (contracts map[string]*Contract, err
 	return
 }
 
-func ExtractInfo(contract *Contract, filename string) (contenthash common.Hash, err error) {
-	contractInfo, err := json.Marshal(contract.Info)
+func SaveInfo(info *ContractInfo, filename string) (contenthash common.Hash, err error) {
+	infojson, err := json.Marshal(info)
 	if err != nil {
 		return
 	}
-	contenthash = common.BytesToHash(crypto.Sha3(contractInfo))
-	err = ioutil.WriteFile(filename, contractInfo, 0600)
+	contenthash = common.BytesToHash(crypto.Sha3(infojson))
+	err = ioutil.WriteFile(filename, infojson, 0600)
 	return
 }
diff --git a/common/compiler/solidity_test.go b/common/compiler/solidity_test.go
index 46f733e59d..7864283c65 100644
--- a/common/compiler/solidity_test.go
+++ b/common/compiler/solidity_test.go
@@ -72,19 +72,15 @@ func TestNoCompiler(t *testing.T) {
 	}
 }
 
-func TestExtractInfo(t *testing.T) {
-	var cinfo ContractInfo
-	err := json.Unmarshal([]byte(info), &cinfo)
+func TestSaveInfo(t *testing.T) {
+	var cinfo *ContractInfo
+	err := json.Unmarshal([]byte(info), cinfo)
 	if err != nil {
 		t.Errorf("%v", err)
 	}
-	contract := &Contract{
-		Code: "",
-		Info: cinfo,
-	}
 	filename := "/tmp/solctest.info.json"
 	os.Remove(filename)
-	cinfohash, err := ExtractInfo(contract, filename)
+	cinfohash, err := SaveInfo(cinfo, filename)
 	if err != nil {
 		t.Errorf("error extracting info: %v", err)
 	}
diff --git a/common/resolver/resolver.go b/common/resolver/resolver.go
index c45ee19828..b2400fe57e 100644
--- a/common/resolver/resolver.go
+++ b/common/resolver/resolver.go
@@ -36,8 +36,8 @@ var (
 
 const (
 	txValue    = "0"
-	txGas      = "100000"
-	txGasPrice = "1000000000000"
+	txGas      = ""
+	txGasPrice = ""
 )
 
 func abiSignature(s string) string {
@@ -284,7 +284,7 @@ func (self *Resolver) RegisterUrl(address common.Address, hash common.Hash, url
 // registers key -> conenthash in HashReg and
 // registers  contenthash -> url in UrlHint
 // creates 3 transaction using address as  sender
-// transactions need to obe mined to take effect
+// transactions need to be mined to take effect
 func (self *Resolver) RegisterAddrWithUrl(address common.Address, codehash, dochash common.Hash, url string) (txh string, err error) {
 
 	_, err = self.RegisterContentHash(address, codehash, dochash)
diff --git a/core/transaction_pool.go b/core/transaction_pool.go
index c896488d1e..879c329249 100644
--- a/core/transaction_pool.go
+++ b/core/transaction_pool.go
@@ -231,6 +231,9 @@ func (tp *TxPool) GetTransaction(hash common.Hash) *types.Transaction {
 }
 
 func (self *TxPool) GetTransactions() (txs types.Transactions) {
+	self.checkQueue()
+	self.validatePool()
+
 	self.mu.RLock()
 	defer self.mu.RUnlock()
 
diff --git a/eth/backend.go b/eth/backend.go
index cdac2a8b8f..17c9da829c 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -290,6 +290,7 @@ func New(config *Config) (*Ethereum, error) {
 	}
 
 	if config.PowTest {
+		glog.V(logger.Info).Infof("ethash used in test mode")
 		eth.pow, err = ethash.NewForTesting()
 		if err != nil {
 			return nil, err