diff --git a/bzz/dbstore_test.go b/bzz/dbstore_test.go
index d3f866cbc7..d1d8939259 100644
--- a/bzz/dbstore_test.go
+++ b/bzz/dbstore_test.go
@@ -7,13 +7,17 @@ import (
 	"github.com/ethereum/go-ethereum/bzz/test"
 )
 
-func testDbStore(l int64, branches int64, t *testing.T) {
-
+func initDbStore() (m *dbStore) {
 	os.RemoveAll("/tmp/bzz")
 	m, err := newDbStore("/tmp/bzz")
 	if err != nil {
 		panic("no dbStore")
 	}
+	return
+}
+
+func testDbStore(l int64, branches int64, t *testing.T) {
+	m := initDbStore()
 	defer m.close()
 	testStore(m, l, branches, t)
 }
@@ -41,3 +45,14 @@ func TestDbStore2_100(t *testing.T) {
 	test.LogInit()
 	testDbStore(100, 2, t)
 }
+
+func TestDbStoreNotFound(t *testing.T) {
+	test.LogInit()
+	m := initDbStore()
+	defer m.close()
+	zeroKey := make([]byte, 32)
+	_, err := m.Get(zeroKey)
+	if err != notFound {
+		t.Errorf("Expected notFound, got %v", err)
+	}
+}
diff --git a/bzz/dpa.go b/bzz/dpa.go
index a026cca03f..aa055645d4 100644
--- a/bzz/dpa.go
+++ b/bzz/dpa.go
@@ -4,6 +4,7 @@ import (
 	"errors"
 	"sync"
 	// "time"
+	"fmt"
 
 	ethlogger "github.com/ethereum/go-ethereum/logger"
 	// "github.com/ethereum/go-ethereum/rlp"
@@ -69,7 +70,7 @@ type ChunkStore interface {
 	Get(Key) (*Chunk, error)
 }
 
-func (self *DPA) Retrieve(key Key) (data LazySectionReader, err error) {
+func (self *DPA) Retrieve(key Key) (data LazySectionReader) {
 
 	reader, errC := self.Chunker.Join(key, self.retrieveC)
 	data = reader
@@ -171,9 +172,14 @@ func (self *DPA) retrieveLoop() {
 func (self *DPA) storeLoop() {
 	self.storeC = make(chan *Chunk)
 	go func() {
+		fmt.Printf("StoreLoop started.\n")
 	STORE:
-		for chunk := range self.storeC {
-			go self.ChunkStore.Put(chunk)
+		for {
+			chunk := <-self.storeC
+			fmt.Printf("StoreLoop reader size %d\n", chunk.Reader.Size())
+			chunk.Data = make([]byte, chunk.Reader.Size())
+			chunk.Reader.ReadAt(chunk.Data, 0)
+			self.ChunkStore.Put(chunk)
 			select {
 			case <-self.quitC:
 				break STORE
diff --git a/bzz/dpa_test.go b/bzz/dpa_test.go
index f4cf80563f..73f34782ac 100644
--- a/bzz/dpa_test.go
+++ b/bzz/dpa_test.go
@@ -1,5 +1,51 @@
 package bzz
 
 import (
-// "github.com/ethereum/go-ethereum/bzz/test"
+	//"bytes"
+	"fmt"
+	"github.com/ethereum/go-ethereum/bzz/test"
+	"os"
+	"testing"
+	"time"
 )
+
+func TestDPA(t *testing.T) {
+	test.LogInit()
+	os.RemoveAll("/tmp/bzz")
+	dbStore, err := newDbStore("/tmp/bzz")
+	if err != nil {
+		t.Errorf("DB error: %v", err)
+	}
+	//	memStore := newMemStore(dbStore)
+	//	localStore := &localStore{
+	//		memStore,
+	//		dbStore,
+	//	}
+	chunker := &TreeChunker{}
+	chunker.Init()
+	dpa := &DPA{
+		Chunker:    chunker,
+		ChunkStore: dbStore,
+	}
+	dpa.Start()
+	reader, slice := testDataReader(0x100)
+	fmt.Printf("Chunk size: %d.", len(slice))
+	//key, err := dpa.Store(reader)
+	_, err = dpa.Store(reader)
+	if err != nil {
+		t.Errorf("Store error: %v", err)
+	}
+	//	resultReader := dpa.Retrieve(key)
+	//	resultSlice := make([]byte, len(slice))
+	//	n, err := resultReader.Read(resultSlice)
+	//	if err != nil {
+	//		t.Errorf("Retrieve error: %v", err)
+	//	}
+	//	if n != len(slice) {
+	//		t.Errorf("Slice size error got %d, expected %d.", n, len(slice))
+	//	}
+	//	if !bytes.Equal(slice, resultSlice) {
+	//		t.Errorf("Comparison error.")
+	//	}
+	time.Sleep(time.Second)
+}
diff --git a/bzz/memstore_test.go b/bzz/memstore_test.go
index 7e93e6ab31..ee22f72a59 100644
--- a/bzz/memstore_test.go
+++ b/bzz/memstore_test.go
@@ -34,3 +34,13 @@ func TestMemStore2_100(t *testing.T) {
 	test.LogInit()
 	testMemStore(100, 2, t)
 }
+
+func TestMemStoreNotFound(t *testing.T) {
+	test.LogInit()
+	m := newMemStore(nil)
+	zeroKey := make([]byte, 32)
+	_, err := m.Get(zeroKey)
+	if err != notFound {
+		t.Errorf("Expected notFound, got %v", err)
+	}
+}