diff --git a/core/chain_manager.go b/core/chain_manager.go
index dd0dd3cbe..47cad825d 100644
--- a/core/chain_manager.go
+++ b/core/chain_manager.go
@@ -396,8 +396,9 @@ func (self *ChainManager) InsertChain(chain types.Blocks) error {
 		self.mu.Unlock()
 
 		if chain {
-			//self.setTransState(state.New(block.Root(), self.db))
-			//self.eventMux.Post(ChainEvent{block, td})
+			fmt.Println("POST START")
+			self.eventMux.Post(ChainEvent{block, td})
+			fmt.Println("POST END")
 		}
 
 		if split {
@@ -413,7 +414,3 @@ func (self *ChainManager) InsertChain(chain types.Blocks) error {
 func (self *ChainManager) GetAccount(addr []byte) *state.StateObject {
 	return self.State().GetAccount(addr)
 }
-
-func (self *ChainManager) TransMut() *sync.RWMutex {
-	return &self.tsmu
-}
diff --git a/event/filter/eth_filter.go b/event/filter/eth_filter.go
index d298d914d..73d2cd935 100644
--- a/event/filter/eth_filter.go
+++ b/event/filter/eth_filter.go
@@ -3,6 +3,7 @@ package filter
 // TODO make use of the generic filtering system
 
 import (
+	"fmt"
 	"sync"
 
 	"github.com/ethereum/go-ethereum/core"
@@ -37,17 +38,18 @@ func (self *FilterManager) Stop() {
 
 func (self *FilterManager) InstallFilter(filter *core.Filter) (id int) {
 	self.filterMu.Lock()
+	defer self.filterMu.Unlock()
 	id = self.filterId
 	self.filters[id] = filter
 	self.filterId++
-	self.filterMu.Unlock()
+
 	return id
 }
 
 func (self *FilterManager) UninstallFilter(id int) {
 	self.filterMu.Lock()
+	defer self.filterMu.Unlock()
 	delete(self.filters, id)
-	self.filterMu.Unlock()
 }
 
 // GetFilter retrieves a filter installed using InstallFilter.
@@ -62,7 +64,7 @@ func (self *FilterManager) filterLoop() {
 	// Subscribe to events
 	events := self.eventMux.Subscribe(
 		core.PendingBlockEvent{},
-		core.ChainEvent{},
+		//core.ChainEvent{},
 		state.Logs(nil))
 
 out:
@@ -73,6 +75,7 @@ out:
 		case event := <-events.Chan():
 			switch event := event.(type) {
 			case core.ChainEvent:
+				fmt.Println("filter start")
 				self.filterMu.RLock()
 				for _, filter := range self.filters {
 					if filter.BlockCallback != nil {
@@ -80,6 +83,7 @@ out:
 					}
 				}
 				self.filterMu.RUnlock()
+				fmt.Println("filter stop")
 
 			case core.PendingBlockEvent:
 				self.filterMu.RLock()
diff --git a/miner/worker.go b/miner/worker.go
index 1f3a52ab5..aea5cc535 100644
--- a/miner/worker.go
+++ b/miner/worker.go
@@ -117,9 +117,11 @@ out:
 		case event := <-events.Chan():
 			switch ev := event.(type) {
 			case core.ChainEvent:
+				println("miner start")
 				if self.current.block != ev.Block {
 					self.commitNewWork()
 				}
+				println("miner end")
 			case core.NewMinedBlockEvent:
 				self.commitNewWork()
 			}
diff --git a/rpc/message.go b/rpc/message.go
index d96c35d7e..825ede05b 100644
--- a/rpc/message.go
+++ b/rpc/message.go
@@ -201,6 +201,36 @@ func (req *RpcRequest) ToGetCodeAtArgs() (*GetCodeAtArgs, error) {
 	return args, nil
 }
 
+func (req *RpcRequest) ToBoolArgs() (bool, error) {
+	if len(req.Params) < 1 {
+		return false, NewErrorResponse(ErrorArguments)
+	}
+
+	var args bool
+	err := json.Unmarshal(req.Params[0], &args)
+	if err != nil {
+		return false, NewErrorResponse(ErrorDecodeArgs)
+	}
+
+	rpclogger.DebugDetailf("%T %v", args, args)
+	return args, nil
+}
+
+func (req *RpcRequest) ToCompileArgs() (string, error) {
+	if len(req.Params) < 1 {
+		return "", NewErrorResponse(ErrorArguments)
+	}
+
+	var args string
+	err := json.Unmarshal(req.Params[0], &args)
+	if err != nil {
+		return "", NewErrorResponse(ErrorDecodeArgs)
+	}
+
+	rpclogger.DebugDetailf("%T %v", args, args)
+	return args, nil
+}
+
 func (req *RpcRequest) ToFilterArgs() (*FilterOptions, error) {
 	if len(req.Params) < 1 {
 		return nil, NewErrorResponse(ErrorArguments)
@@ -231,6 +261,36 @@ func (req *RpcRequest) ToFilterStringArgs() (string, error) {
 	return args, nil
 }
 
+func (req *RpcRequest) ToUninstallFilterArgs() (int, error) {
+	if len(req.Params) < 1 {
+		return 0, NewErrorResponse(ErrorArguments)
+	}
+
+	var args int
+	err := json.Unmarshal(req.Params[0], &args)
+	if err != nil {
+		return 0, NewErrorResponse(ErrorDecodeArgs)
+	}
+
+	rpclogger.DebugDetailf("%T %v", args, args)
+	return args, nil
+}
+
+func (req *RpcRequest) ToFilterChangedArgs() (int, error) {
+	if len(req.Params) < 1 {
+		return 0, NewErrorResponse(ErrorArguments)
+	}
+
+	var id int
+	r := bytes.NewReader(req.Params[0])
+	err := json.NewDecoder(r).Decode(&id)
+	if err != nil {
+		return 0, NewErrorResponse(ErrorDecodeArgs)
+	}
+	rpclogger.DebugDetailf("%T %v", id, id)
+	return id, nil
+}
+
 func (req *RpcRequest) ToDbPutArgs() (*DbArgs, error) {
 	if len(req.Params) < 3 {
 		return nil, NewErrorResponse(ErrorArguments)
diff --git a/rpc/packages.go b/rpc/packages.go
index 7411392c2..56c1751d7 100644
--- a/rpc/packages.go
+++ b/rpc/packages.go
@@ -113,6 +113,13 @@ func (self *EthereumApi) NewFilter(args *FilterOptions, reply *interface{}) erro
 	return nil
 }
 
+func (self *EthereumApi) UninstallFilter(id int, reply *interface{}) error {
+	delete(self.logs, id)
+	self.filterManager.UninstallFilter(id)
+	*reply = true
+	return nil
+}
+
 func (self *EthereumApi) NewFilterString(args string, reply *interface{}) error {
 	var id int
 	filter := core.NewFilter(self.xeth.Backend())
@@ -273,6 +280,11 @@ func (p *EthereumApi) GetIsMining(reply *interface{}) error {
 	return nil
 }
 
+func (p *EthereumApi) SetMining(shouldmine bool, reply *interface{}) error {
+	*reply = p.xeth.SetMining(shouldmine)
+	return nil
+}
+
 func (p *EthereumApi) BlockNumber(reply *interface{}) error {
 	*reply = p.xeth.Backend().ChainManager().CurrentBlock().Number()
 	return nil
@@ -306,6 +318,21 @@ func (p *EthereumApi) GetCodeAt(args *GetCodeAtArgs, reply *interface{}) error {
 	return nil
 }
 
+func (p *EthereumApi) GetCompilers(reply *interface{}) error {
+	c := []string{"serpent"}
+	*reply = c
+	return nil
+}
+
+func (p *EthereumApi) CompileSerpent(script string, reply *interface{}) error {
+	res, err := ethutil.Compile(script, false)
+	if err != nil {
+		return err
+	}
+	*reply = res
+	return nil
+}
+
 func (p *EthereumApi) Sha3(args *Sha3Args, reply *interface{}) error {
 	*reply = toHex(crypto.Sha3(fromHex(args.Data)))
 	return nil
@@ -394,6 +421,12 @@ func (p *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) error
 		return p.GetIsListening(reply)
 	case "eth_mining":
 		return p.GetIsMining(reply)
+	case "eth_setMining":
+		args, err := req.ToBoolArgs()
+		if err != nil {
+			return err
+		}
+		return p.SetMining(args, reply)
 	case "eth_peerCount":
 		return p.GetPeerCount(reply)
 	case "eth_number":
@@ -460,6 +493,12 @@ func (p *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) error
 			return err
 		}
 		return p.NewFilterString(args, reply)
+	case "eth_uninstallFilter":
+		args, err := req.ToUninstallFilterArgs()
+		if err != nil {
+			return err
+		}
+		return p.UninstallFilter(args, reply)
 	case "eth_changed":
 		args, err := req.ToIdArgs()
 		if err != nil {
@@ -493,6 +532,14 @@ func (p *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) error
 			return err
 		}
 		return p.WatchTx(args, reply)
+	case "eth_compilers":
+		return p.GetCompilers(reply)
+	case "eth_serpent":
+		args, err := req.ToCompileArgs()
+		if err != nil {
+			return err
+		}
+		return p.CompileSerpent(args, reply)
 	case "web3_sha3":
 		args, err := req.ToSha3Args()
 		if err != nil {
diff --git a/xeth/xeth.go b/xeth/xeth.go
index 67dac948c..f3569e454 100644
--- a/xeth/xeth.go
+++ b/xeth/xeth.go
@@ -103,6 +103,17 @@ func (self *XEth) IsMining() bool {
 	return self.miner.Mining()
 }
 
+func (self *XEth) SetMining(shouldmine bool) bool {
+	ismining := self.miner.Mining()
+	if shouldmine && !ismining {
+		self.miner.Start()
+	}
+	if ismining && !shouldmine {
+		self.miner.Stop()
+	}
+	return self.miner.Mining()
+}
+
 func (self *XEth) IsListening() bool {
 	return self.eth.IsListening()
 }