diff --git a/src/engine/network_engine/clientbero.cpp b/src/engine/network_engine/clientbero.cpp
index e12a67ef..afc12b71 100644
--- a/src/engine/network_engine/clientbero.cpp
+++ b/src/engine/network_engine/clientbero.cpp
@@ -11,7 +11,7 @@
 //
 #include "clientbero.h"
 
-ClientBeRo::ClientBeRo(HandInterface* hi, int id, int qP, int dP, int sB, GameState gS)
+ClientBeRo::ClientBeRo(HandInterface* hi, int /*id*/, int /*qP*/, int dP, int sB, GameState gS)
 : BeRoInterface(), myHand(hi), highestCardsValue(0), myBeRoID(gS), smallBlindPosition(0), smallBlind(sB), highestSet(0), firstRound(1), playersTurn(dP), minimumRaise(0)
 {
 }
diff --git a/src/engine/network_engine/clientplayer.cpp b/src/engine/network_engine/clientplayer.cpp
index 572c4304..722bafd7 100644
--- a/src/engine/network_engine/clientplayer.cpp
+++ b/src/engine/network_engine/clientplayer.cpp
@@ -165,7 +165,7 @@ ClientPlayer::getMyLastRelativeSet() const
 }
 
 void
-ClientPlayer::setMyAction(int theValue, bool blind)
+ClientPlayer::setMyAction(int theValue, bool /*blind*/)
 {
 	boost::recursive_mutex::scoped_lock lock(m_syncMutex);
 	myAction = theValue;
@@ -421,20 +421,20 @@ ClientPlayer::riverEngine()
 
 
 void
-ClientPlayer::evaluation(int bet, int raise)
+ClientPlayer::evaluation(int /*bet*/, int /*raise*/)
 {
 }
 
 
 int
-ClientPlayer::preflopCardsValue(int* cards)
+ClientPlayer::preflopCardsValue(int* /*cards*/)
 {
 	return 0;
 }
 
 
 int
-ClientPlayer::flopCardsValue(int* cards)
+ClientPlayer::flopCardsValue(int* /*cards*/)
 {
 	return 0;
 }
@@ -446,7 +446,7 @@ ClientPlayer::readFile()
 }
 
 int
-ClientPlayer::turnCardsValue(int* cards)
+ClientPlayer::turnCardsValue(int* /*cards*/)
 {
 	return 0;
 }
diff --git a/src/gui/qt/joinnetworkgamedialog/joinnetworkgamedialogimpl.cpp b/src/gui/qt/joinnetworkgamedialog/joinnetworkgamedialogimpl.cpp
index a1eaa0f6..3382dedd 100644
--- a/src/gui/qt/joinnetworkgamedialog/joinnetworkgamedialogimpl.cpp
+++ b/src/gui/qt/joinnetworkgamedialog/joinnetworkgamedialogimpl.cpp
@@ -121,9 +121,9 @@ void joinNetworkGameDialogImpl::fillServerProfileList() {
 	TiXmlElement* profile = docHandle.FirstChild( "PokerTH" ).FirstChild( "ServerProfiles" ).FirstChild().ToElement();
 	if ( profile ) {
 
-                for( profile; profile; profile = profile->NextSiblingElement()) {
+		for( ; profile; profile = profile->NextSiblingElement()) {
 			
-		   	QTreeWidgetItem *item = new QTreeWidgetItem(treeWidget,0);
+			QTreeWidgetItem *item = new QTreeWidgetItem(treeWidget,0);
 			item->setData(0, 0, QString::fromUtf8(profile->Attribute("Name")));
 			item->setData(1, 0, QString::fromUtf8(profile->Attribute("Address")));
 			item->setData(2, 0, profile->Attribute("Port"));
diff --git a/src/net/common/clientstate.cpp b/src/net/common/clientstate.cpp
index a2c2c693..588bf268 100644
--- a/src/net/common/clientstate.cpp
+++ b/src/net/common/clientstate.cpp
@@ -570,7 +570,6 @@ int
 ClientStateWaitGame::InternalProcess(ClientThread &client, boost::shared_ptr<NetPacket> packet)
 {
 	int retVal = MSG_SOCK_INTERNAL_PENDING;
-	ClientContext &context = client.GetContext();
 
 	if (packet->ToNetPacketGameStart())
 	{
@@ -653,7 +652,6 @@ int
 ClientStateWaitHand::InternalProcess(ClientThread &client, boost::shared_ptr<NetPacket> packet)
 {
 	int retVal = MSG_SOCK_INTERNAL_PENDING;
-	ClientContext &context = client.GetContext();
 
 	if (packet->ToNetPacketHandStart())
 	{
@@ -717,7 +715,6 @@ int
 ClientStateRunHand::InternalProcess(ClientThread &client, boost::shared_ptr<NetPacket> packet)
 {
 	int retVal = MSG_SOCK_INTERNAL_PENDING;
-	ClientContext &context = client.GetContext();
 
 	if (packet.get())
 	{
@@ -1095,7 +1092,7 @@ ClientStateFinal::~ClientStateFinal()
 }
 
 int
-ClientStateFinal::Process(ClientThread &client)
+ClientStateFinal::Process(ClientThread &/*client*/)
 {
 	Thread::Msleep(10);
 
diff --git a/src/net/common/clientthread.cpp b/src/net/common/clientthread.cpp
index 9cd516ff..1447a982 100644
--- a/src/net/common/clientthread.cpp
+++ b/src/net/common/clientthread.cpp
@@ -40,7 +40,7 @@ public:
 	ClientSenderCallback(ClientThread &client) : m_client(client) {}
 	virtual ~ClientSenderCallback() {}
 
-	virtual void SignalNetError(SOCKET sock, int errorID, int osErrorID)
+	virtual void SignalNetError(SOCKET /*sock*/, int errorID, int osErrorID)
 	{
 		// For now, we ignore the socket.
 		// Just signal the error.
diff --git a/src/net/common/netpacket.cpp b/src/net/common/netpacket.cpp
index f2d27771..1c0351d5 100644
--- a/src/net/common/netpacket.cpp
+++ b/src/net/common/netpacket.cpp
@@ -981,7 +981,7 @@ NetPacketInitAck::ToNetPacketInitAck() const
 }
 
 void
-NetPacketInitAck::InternalCheck(const NetPacketHeader* data) const
+NetPacketInitAck::InternalCheck(const NetPacketHeader*) const
 {
 	// Nothing to do.
 }
@@ -1186,9 +1186,8 @@ NetPacketGameListUpdate::ToNetPacketGameListUpdate() const
 }
 
 void
-NetPacketGameListUpdate::InternalCheck(const NetPacketHeader* data) const
+NetPacketGameListUpdate::InternalCheck(const NetPacketHeader*) const
 {
-	// Nothing to do.
 }
 
 //-----------------------------------------------------------------------------
@@ -1246,7 +1245,7 @@ NetPacketGameListPlayerJoined::ToNetPacketGameListPlayerJoined() const
 }
 
 void
-NetPacketGameListPlayerJoined::InternalCheck(const NetPacketHeader* data) const
+NetPacketGameListPlayerJoined::InternalCheck(const NetPacketHeader*) const
 {
 	// Nothing to do.
 }
@@ -1306,7 +1305,7 @@ NetPacketGameListPlayerLeft::ToNetPacketGameListPlayerLeft() const
 }
 
 void
-NetPacketGameListPlayerLeft::InternalCheck(const NetPacketHeader* data) const
+NetPacketGameListPlayerLeft::InternalCheck(const NetPacketHeader*) const
 {
 	// Nothing to do.
 }
@@ -1364,7 +1363,7 @@ NetPacketRetrievePlayerInfo::ToNetPacketRetrievePlayerInfo() const
 }
 
 void
-NetPacketRetrievePlayerInfo::InternalCheck(const NetPacketHeader* data) const
+NetPacketRetrievePlayerInfo::InternalCheck(const NetPacketHeader*) const
 {
 	// Nothing to do.
 }
@@ -1748,7 +1747,6 @@ NetPacketJoinGameAck::ToNetPacketJoinGameAck() const
 void
 NetPacketJoinGameAck::InternalCheck(const NetPacketHeader* data) const
 {
-	u_int16_t dataLen = ntohs(data->length);
 	NetPacketJoinGameAckData *tmpData = (NetPacketJoinGameAckData *)data;
 	// Semantic checks
 	int maxNumPlayers = ntohs(tmpData->maxNumberOfPlayers);
@@ -1820,7 +1818,7 @@ NetPacketPlayerJoined::ToNetPacketPlayerJoined() const
 }
 
 void
-NetPacketPlayerJoined::InternalCheck(const NetPacketHeader* data) const
+NetPacketPlayerJoined::InternalCheck(const NetPacketHeader*) const
 {
 	// Nothing to do.
 }
@@ -1878,7 +1876,7 @@ NetPacketPlayerLeft::ToNetPacketPlayerLeft() const
 }
 
 void
-NetPacketPlayerLeft::InternalCheck(const NetPacketHeader* data) const
+NetPacketPlayerLeft::InternalCheck(const NetPacketHeader*) const
 {
 	// Nothing to do.
 }
@@ -1936,7 +1934,7 @@ NetPacketKickPlayer::ToNetPacketKickPlayer() const
 }
 
 void
-NetPacketKickPlayer::InternalCheck(const NetPacketHeader* data) const
+NetPacketKickPlayer::InternalCheck(const NetPacketHeader*) const
 {
 	// Nothing to do.
 }
@@ -1973,7 +1971,7 @@ NetPacketStartEvent::ToNetPacketStartEvent() const
 }
 
 void
-NetPacketStartEvent::InternalCheck(const NetPacketHeader* data) const
+NetPacketStartEvent::InternalCheck(const NetPacketHeader*) const
 {
 	// Nothing to do.
 }
@@ -2907,7 +2905,7 @@ NetPacketEndOfHandHideCards::ToNetPacketEndOfHandHideCards() const
 }
 
 void
-NetPacketEndOfHandHideCards::InternalCheck(const NetPacketHeader* data) const
+NetPacketEndOfHandHideCards::InternalCheck(const NetPacketHeader*) const
 {
 	// Nothing to do.
 }
@@ -2963,7 +2961,7 @@ NetPacketEndOfGame::ToNetPacketEndOfGame() const
 }
 
 void
-NetPacketEndOfGame::InternalCheck(const NetPacketHeader* data) const
+NetPacketEndOfGame::InternalCheck(const NetPacketHeader*) const
 {
 	// Nothing to do.
 }
@@ -3265,7 +3263,7 @@ NetPacketError::ToNetPacketError() const
 }
 
 void
-NetPacketError::InternalCheck(const NetPacketHeader* data) const
+NetPacketError::InternalCheck(const NetPacketHeader*) const
 {
 	// Nothing to do.
 }
diff --git a/src/net/common/servergamestate.cpp b/src/net/common/servergamestate.cpp
index b72e70e6..03326799 100644
--- a/src/net/common/servergamestate.cpp
+++ b/src/net/common/servergamestate.cpp
@@ -352,7 +352,7 @@ void
 AbstractServerGameStateRunning::HandleNewSession(ServerGameThread &server, SessionWrapper session)
 {
 	// Do not accept new sessions in this state.
-	// TODO
+	server.SessionError(session, ERR_NET_GAME_ALREADY_RUNNING);
 }
 
 //-----------------------------------------------------------------------------
diff --git a/src/net/netpacket.h b/src/net/netpacket.h
index 3d01c2ce..83f2716c 100644
--- a/src/net/netpacket.h
+++ b/src/net/netpacket.h
@@ -123,6 +123,8 @@ public:
 
 protected:
 
+	NetPacket &operator=(const NetPacket& right); // not allowed
+
 	void Check(const NetPacketHeader *data) const;
 	virtual void InternalCheck(const NetPacketHeader *data) const = 0;