diff --git a/ethereal/ext_app.go b/ethereal/ext_app.go
index c02f5ccb384010539518bad598618673aa75fb10..17c342a1b93c62de725988b036f841b7676e1c90 100644
--- a/ethereal/ext_app.go
+++ b/ethereal/ext_app.go
@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"github.com/ethereum/eth-go/ethchain"
 	"github.com/ethereum/eth-go/ethpub"
-	"github.com/ethereum/eth-go/ethreact"
 	"github.com/ethereum/eth-go/ethutil"
 	"github.com/go-qml/qml"
 )
@@ -25,8 +24,8 @@ type AppContainer interface {
 type ExtApplication struct {
 	*ethpub.PEthereum
 
-	blockChan       chan ethreact.Event
-	changeChan      chan ethreact.Event
+	blockChan       chan ethutil.React
+	changeChan      chan ethutil.React
 	quitChan        chan bool
 	watcherQuitChan chan bool
 
@@ -38,8 +37,8 @@ type ExtApplication struct {
 func NewExtApplication(container AppContainer, lib *UiLib) *ExtApplication {
 	app := &ExtApplication{
 		ethpub.NewPEthereum(lib.eth),
-		make(chan ethreact.Event),
-		make(chan ethreact.Event),
+		make(chan ethutil.React, 1),
+		make(chan ethutil.React, 1),
 		make(chan bool),
 		make(chan bool),
 		container,
diff --git a/ethereal/gui.go b/ethereal/gui.go
index 2bad90361c1f717cf6c18a2845dd6deba600e3cf..9f28045f86605a4be27c64a3a80a897048296ed0 100644
--- a/ethereal/gui.go
+++ b/ethereal/gui.go
@@ -8,7 +8,6 @@ import (
 	"github.com/ethereum/eth-go/ethdb"
 	"github.com/ethereum/eth-go/ethlog"
 	"github.com/ethereum/eth-go/ethpub"
-	"github.com/ethereum/eth-go/ethreact"
 	"github.com/ethereum/eth-go/ethutil"
 	"github.com/ethereum/eth-go/ethwire"
 	"github.com/ethereum/go-ethereum/utils"
@@ -144,7 +143,7 @@ func (gui *Gui) showWallet(context *qml.Context) (*qml.Window, error) {
 	gui.readPreviousTransactions()
 	gui.setPeerInfo()
 
-	gui.update()
+	go gui.update()
 
 	return win, nil
 }
@@ -267,10 +266,20 @@ func (gui *Gui) setWalletValue(amount, unconfirmedFunds *big.Int) {
 func (gui *Gui) update() {
 	reactor := gui.eth.Reactor()
 
-	blockChan := make(chan ethreact.Event)
-	txChan := make(chan ethreact.Event)
-	objectChan := make(chan ethreact.Event)
-	peerChan := make(chan ethreact.Event)
+	blockChan := make(chan ethutil.React, 1)
+	txChan := make(chan ethutil.React, 1)
+	objectChan := make(chan ethutil.React, 1)
+	peerChan := make(chan ethutil.React, 1)
+
+	reactor.Subscribe("newBlock", blockChan)
+	reactor.Subscribe("newTx:pre", txChan)
+	reactor.Subscribe("newTx:post", txChan)
+
+	nameReg := ethpub.EthereumConfig(gui.eth.StateManager()).NameReg()
+	if nameReg != nil {
+		reactor.Subscribe("object:"+string(nameReg.Address()), objectChan)
+	}
+	reactor.Subscribe("peerList", peerChan)
 
 	ticker := time.NewTicker(5 * time.Second)
 
@@ -279,66 +288,54 @@ func (gui *Gui) update() {
 	unconfirmedFunds := new(big.Int)
 	gui.win.Root().Call("setWalletValue", fmt.Sprintf("%v", ethutil.CurrencyToString(state.GetAccount(gui.address()).Amount)))
 
-	go func() {
-		for {
-			select {
-			case b := <-blockChan:
-				block := b.Resource.(*ethchain.Block)
-				gui.processBlock(block, false)
-				if bytes.Compare(block.Coinbase, gui.address()) == 0 {
-					gui.setWalletValue(gui.eth.StateManager().CurrentState().GetAccount(gui.address()).Amount, nil)
-				}
+	for {
+		select {
+		case b := <-blockChan:
+			block := b.Resource.(*ethchain.Block)
+			gui.processBlock(block, false)
+			if bytes.Compare(block.Coinbase, gui.address()) == 0 {
+				gui.setWalletValue(gui.eth.StateManager().CurrentState().GetAccount(gui.address()).Amount, nil)
+			}
 
-			case txMsg := <-txChan:
-				tx := txMsg.Resource.(*ethchain.Transaction)
+		case txMsg := <-txChan:
+			tx := txMsg.Resource.(*ethchain.Transaction)
 
-				if txMsg.Name == "newTx:pre" {
-					object := state.GetAccount(gui.address())
+			if txMsg.Event == "newTx:pre" {
+				object := state.GetAccount(gui.address())
 
-					if bytes.Compare(tx.Sender(), gui.address()) == 0 {
-						gui.win.Root().Call("addTx", ethpub.NewPTx(tx), "send")
-						gui.txDb.Put(tx.Hash(), tx.RlpEncode())
+				if bytes.Compare(tx.Sender(), gui.address()) == 0 {
+					gui.win.Root().Call("addTx", ethpub.NewPTx(tx), "send")
+					gui.txDb.Put(tx.Hash(), tx.RlpEncode())
 
-						unconfirmedFunds.Sub(unconfirmedFunds, tx.Value)
-					} else if bytes.Compare(tx.Recipient, gui.address()) == 0 {
-						gui.win.Root().Call("addTx", ethpub.NewPTx(tx), "recv")
-						gui.txDb.Put(tx.Hash(), tx.RlpEncode())
+					unconfirmedFunds.Sub(unconfirmedFunds, tx.Value)
+				} else if bytes.Compare(tx.Recipient, gui.address()) == 0 {
+					gui.win.Root().Call("addTx", ethpub.NewPTx(tx), "recv")
+					gui.txDb.Put(tx.Hash(), tx.RlpEncode())
 
-						unconfirmedFunds.Add(unconfirmedFunds, tx.Value)
-					}
+					unconfirmedFunds.Add(unconfirmedFunds, tx.Value)
+				}
 
-					gui.setWalletValue(object.Amount, unconfirmedFunds)
-				} else {
-					object := state.GetAccount(gui.address())
-					if bytes.Compare(tx.Sender(), gui.address()) == 0 {
-						object.SubAmount(tx.Value)
-					} else if bytes.Compare(tx.Recipient, gui.address()) == 0 {
-						object.AddAmount(tx.Value)
-					}
+				gui.setWalletValue(object.Amount, unconfirmedFunds)
+			} else {
+				object := state.GetAccount(gui.address())
+				if bytes.Compare(tx.Sender(), gui.address()) == 0 {
+					object.SubAmount(tx.Value)
+				} else if bytes.Compare(tx.Recipient, gui.address()) == 0 {
+					object.AddAmount(tx.Value)
+				}
 
-					gui.setWalletValue(object.Amount, nil)
+				gui.setWalletValue(object.Amount, nil)
 
-					state.UpdateStateObject(object)
-				}
-			case <-objectChan:
-				gui.loadAddressBook()
-			case <-peerChan:
-				gui.setPeerInfo()
-			case <-ticker.C:
-				gui.setPeerInfo()
+				state.UpdateStateObject(object)
 			}
+		case <-objectChan:
+			gui.loadAddressBook()
+		case <-peerChan:
+			gui.setPeerInfo()
+		case <-ticker.C:
+			gui.setPeerInfo()
 		}
-	}()
-	reactor.Subscribe("newBlock", blockChan)
-	reactor.Subscribe("newTx:pre", txChan)
-	reactor.Subscribe("newTx:post", txChan)
-
-	nameReg := ethpub.EthereumConfig(gui.eth.StateManager()).NameReg()
-	if nameReg != nil {
-		reactor.Subscribe("object:"+string(nameReg.Address()), objectChan)
 	}
-	reactor.Subscribe("peerList", peerChan)
-
 }
 
 func (gui *Gui) setPeerInfo() {
diff --git a/ethereum/javascript_runtime.go b/ethereum/javascript_runtime.go
index 6e107e376b344eab75c48494de732e1dee255685..852a5048794d75e2856f33d2cc20369f6fb60a70 100644
--- a/ethereum/javascript_runtime.go
+++ b/ethereum/javascript_runtime.go
@@ -6,7 +6,6 @@ import (
 	"github.com/ethereum/eth-go/ethchain"
 	"github.com/ethereum/eth-go/ethlog"
 	"github.com/ethereum/eth-go/ethpub"
-	"github.com/ethereum/eth-go/ethreact"
 	"github.com/ethereum/eth-go/ethutil"
 	"github.com/ethereum/go-ethereum/utils"
 	"github.com/obscuren/otto"
@@ -23,8 +22,8 @@ type JSRE struct {
 	vm       *otto.Otto
 	lib      *ethpub.PEthereum
 
-	blockChan  chan ethreact.Event
-	changeChan chan ethreact.Event
+	blockChan  chan ethutil.React
+	changeChan chan ethutil.React
 	quitChan   chan bool
 
 	objectCb map[string][]otto.Value
@@ -49,8 +48,8 @@ func NewJSRE(ethereum *eth.Ethereum) *JSRE {
 		ethereum,
 		otto.New(),
 		ethpub.NewPEthereum(ethereum),
-		make(chan ethreact.Event),
-		make(chan ethreact.Event),
+		make(chan ethutil.React, 1),
+		make(chan ethutil.React, 1),
 		make(chan bool),
 		make(map[string][]otto.Value),
 	}
@@ -64,9 +63,6 @@ func NewJSRE(ethereum *eth.Ethereum) *JSRE {
 
 	// We have to make sure that, whoever calls this, calls "Stop"
 	go re.mainLoop()
-	// Subscribe to events
-	reactor := ethereum.Reactor()
-	reactor.Subscribe("newBlock", re.blockChan)
 
 	re.Bind("eth", &JSEthereum{re.lib, re.vm})
 
@@ -112,6 +108,10 @@ func (self *JSRE) Stop() {
 }
 
 func (self *JSRE) mainLoop() {
+	// Subscribe to events
+	reactor := self.ethereum.Reactor()
+	reactor.Subscribe("newBlock", self.blockChan)
+
 out:
 	for {
 		select {