diff --git a/eth/filters/api.go b/eth/filters/api.go
index b9783031fb..311cd146e5 100644
--- a/eth/filters/api.go
+++ b/eth/filters/api.go
@@ -138,6 +138,7 @@ done:
 
 // NewBlockFilter create a new filter that returns blocks that are included into the canonical chain.
 func (s *PublicFilterAPI) NewBlockFilter() (string, error) {
+fmt.Println("NewBlockFilter")
 	externalId, err := newFilterId()
 	if err != nil {
 		return "", err
@@ -155,8 +156,10 @@ func (s *PublicFilterAPI) NewBlockFilter() (string, error) {
 	filter.BlockCallback = func(block *types.Block, logs vm.Logs) {
 		s.blockMu.Lock()
 		defer s.blockMu.Unlock()
+fmt.Println("callback")
 
 		if queue := s.blockQueue[id]; queue != nil {
+fmt.Println(" add")
 			queue.add(block.Hash())
 		}
 	}
@@ -498,8 +501,11 @@ func (s *PublicFilterAPI) blockFilterChanged(id int) []common.Hash {
 	s.blockMu.Lock()
 	defer s.blockMu.Unlock()
 
+fmt.Println("blockFilterChanged")
 	if s.blockQueue[id] != nil {
-		return s.blockQueue[id].get()
+		res := s.blockQueue[id].get()
+fmt.Println(" len = ", len(res))
+		return res
 	}
 	return nil
 }
diff --git a/eth/filters/filter_system.go b/eth/filters/filter_system.go
index 4343dfa21c..104f6e55ae 100644
--- a/eth/filters/filter_system.go
+++ b/eth/filters/filter_system.go
@@ -134,9 +134,12 @@ func (fs *FilterSystem) filterLoop() {
 	for event := range fs.sub.Chan() {
 		switch ev := event.Data.(type) {
 		case core.ChainEvent:
+fmt.Println("ChainEvent")
 			fs.filterMu.RLock()
 			for _, filter := range fs.chainFilters {
+fmt.Println("1")
 				if filter.BlockCallback != nil && !filter.created.After(event.Time) {
+fmt.Println("2")
 					filter.BlockCallback(ev.Block, ev.Logs)
 				}
 			}
diff --git a/light/events.go b/light/events.go
deleted file mode 100644
index 28d91e31d4..0000000000
--- a/light/events.go
+++ /dev/null
@@ -1,33 +0,0 @@
-// Copyright 2015 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package light
-
-import (
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/core/types"
-)
-
-type LightChainSplitEvent struct{ Header *types.Header }
-
-type LightChainEvent struct {
-	Header *types.Header
-	Hash   common.Hash
-}
-
-type LightChainSideEvent struct{ Header *types.Header }
-
-type LightChainHeadEvent struct{ Header *types.Header }
diff --git a/light/lightchain.go b/light/lightchain.go
index a70cb4493a..f6a1202807 100644
--- a/light/lightchain.go
+++ b/light/lightchain.go
@@ -338,9 +338,9 @@ func (self *LightChain) Rollback(chain []common.Hash) {
 // posts them into the event mux.
 func (self *LightChain) postChainEvents(events []interface{}) {
 	for _, event := range events {
-		if event, ok := event.(LightChainEvent); ok {
+		if event, ok := event.(core.ChainEvent); ok {
 			if self.LastBlockHash() == event.Hash {
-				self.eventMux.Post(LightChainHeadEvent{event.Header})
+				self.eventMux.Post(core.ChainHeadEvent{Block: event.Block})
 			}
 		}
 		// Fire the insertion events individually too
@@ -379,16 +379,16 @@ func (self *LightChain) InsertHeaderChain(chain []*types.Header, checkFreq int)
 			if glog.V(logger.Debug) {
 				glog.Infof("[%v] inserted header #%d (%x...).\n", time.Now().UnixNano(), header.Number, header.Hash().Bytes()[0:4])
 			}
-			events = append(events, LightChainEvent{header, header.Hash()})
+			events = append(events, core.ChainEvent{Block: types.NewBlockWithHeader(header), Hash: header.Hash()})
 
 		case core.SideStatTy:
 			if glog.V(logger.Detail) {
 				glog.Infof("inserted forked header #%d (TD=%v) (%x...).\n", header.Number, header.Difficulty, header.Hash().Bytes()[0:4])
 			}
-			events = append(events, LightChainSideEvent{header})
+			events = append(events, core.ChainSideEvent{Block: types.NewBlockWithHeader(header)})
 
 		case core.SplitStatTy:
-			events = append(events, LightChainSplitEvent{header})
+			events = append(events, core.ChainSplitEvent{Block: types.NewBlockWithHeader(header)})
 		}
 
 		return err
diff --git a/light/txpool.go b/light/txpool.go
index b1e3f92e6a..15a2c540b4 100644
--- a/light/txpool.go
+++ b/light/txpool.go
@@ -84,7 +84,7 @@ func NewTxPool(config *core.ChainConfig, eventMux *event.TypeMux, chain *LightCh
 		mined:    make(map[common.Hash][]*types.Transaction),
 		quit:     make(chan bool),
 		eventMux: eventMux,
-		events:   eventMux.Subscribe(LightChainHeadEvent{}),
+		events:   eventMux.Subscribe(core.ChainHeadEvent{}),
 		chain:    chain,
 		relay:    relay,
 		odr:      chain.Odr(),
@@ -274,7 +274,7 @@ const blockCheckTimeout = time.Second * 3
 func (pool *TxPool) eventLoop() {
 	for ev := range pool.events.Chan() {
 		switch ev.Data.(type) {
-		case LightChainHeadEvent:
+		case core.ChainHeadEvent:
 			pool.mu.Lock()
 			ctx, _ := context.WithTimeout(context.Background(), blockCheckTimeout)
 			head := pool.chain.CurrentHeader()