diff --git a/src/core/piinit.cpp b/src/core/piinit.cpp
index 15f77e72..db53988a 100644
--- a/src/core/piinit.cpp
+++ b/src/core/piinit.cpp
@@ -236,7 +236,11 @@ PIInit::PIInit() {
 #      ifdef ANDROID
 		PIStringAscii("Android");
 #      else
+#        ifdef FREE_BSD
+		PIStringAscii("FreeBSD");
+#        else
 		uns.sysname;
+#        endif
 #      endif
 #    endif
 #  endif
diff --git a/src/core/piobject.cpp b/src/core/piobject.cpp
index 5087bf11..fe6b3a19 100755
--- a/src/core/piobject.cpp
+++ b/src/core/piobject.cpp
@@ -274,7 +274,7 @@ void PIObject::piDisconnect(PIObject * src, const PIString & sig, PIObject * des
 			i--;
 		}
 	}
-	((PIObject*)dest)->updateConnectors();
+	dest->updateConnectors();
 }
 
 
@@ -288,7 +288,7 @@ void PIObject::piDisconnect(PIObject * src, const PIString & sig, PIObject * des
 			i--;
 		}
 	}
-	((PIObject*)dest)->updateConnectors();
+	dest->updateConnectors();
 }
 
 
@@ -300,7 +300,9 @@ void PIObject::piDisconnect(PIObject * src, const PIString & sig) {
 			PIObject * dest = cc.dest_o;
 			src->connections.remove(i);
 			i--;
+#ifndef ANDROID
 			PIMutexLocker _mld(dest->mutex_connect, src != dest);
+#endif
 			dest->updateConnectors();
 		}
 	}
@@ -313,7 +315,9 @@ void PIObject::piDisconnect(PIObject * src) {
 	PIVector<PIObject * > cv = src->connectors.toVector();
 	piForeach (PIObject * o, cv) {
 		if (o == src) continue;
+#ifndef ANDROID
 		PIMutexLocker _mld(o->mutex_connect, src != o);
+#endif
 		PIVector<Connection> & oc(o->connections);
 		for (int i = 0; i < oc.size_s(); ++i) {
 			//piCout << "    check" << (void*)(oc[i].dest_o) << "==" << (void*)(src);
diff --git a/src/core/pistring.h b/src/core/pistring.h
index 2497f482..8e7019fe 100755
--- a/src/core/pistring.h
+++ b/src/core/pistring.h
@@ -115,7 +115,7 @@ public:
 	//~PIString() {piMonitor.strings--; piMonitor.containers++;}
 
 
-	PIString & operator =(const PIString & o) {clear(); *this += o; return *this;}
+	PIString & operator =(const PIString & o) {if (this == &o) return *this; clear(); *this += o; return *this;}
 
 	/*! \brief Return c-string representation of string
 	 * \details Converts content of string to c-string and return
diff --git a/src/io/piethernet.cpp b/src/io/piethernet.cpp
index aa85dff9..74bf3dac 100755
--- a/src/io/piethernet.cpp
+++ b/src/io/piethernet.cpp
@@ -268,7 +268,7 @@ bool PIEthernet::closeDevice() {
 	while (!clients_.isEmpty())
 		delete clients_.back();
 	if (connected_) disconnected(false);
-	connected_ = false;
+	connected_ = connecting_ = false;
 	return true;
 }
 
@@ -520,11 +520,11 @@ int PIEthernet::read(void * read_to, int max_size) {
 		//qDebug() << "readed" << rs;
 		if (rs <= 0) {
 			lerr = ethErrorCore();
-			//piCoutObj << "readed error" << lerr << errorString().data();
+			//piCoutObj << "readed error" << lerr << errorString().data() << parameters()[DisonnectOnTimeout];
 #ifdef WINDOWS
-			if (lerr == WSAEWOULDBLOCK || /*lerr == NO_ERROR ||*/ lerr == WSAETIMEDOUT) {
+			if ((lerr == WSAEWOULDBLOCK || lerr == WSAETIMEDOUT) && !parameters()[DisonnectOnTimeout]) {
 #else
-			if (lerr == EAGAIN || lerr == EWOULDBLOCK) {
+			if ((lerr == EWOULDBLOCK || lerr == EAGAIN) && !parameters()[DisonnectOnTimeout]) {
 #endif
 			//piCoutObj << errorString();
 				piMSleep(10);
@@ -532,10 +532,10 @@ int PIEthernet::read(void * read_to, int max_size) {
 			}
 			if (connected_) {
 				init();
+				connected_ = false;
 				disconnected(rs < 0);
 			}
-			connected_ = false;
-			if (parameters()[PIEthernet::KeepConnection])
+			if (parameters()[KeepConnection])
 				connect();
 			//piCoutObj << "eth" << ip_ << "disconnected";
 		}
diff --git a/src/io/piethernet.h b/src/io/piethernet.h
index ed2afa8d..cbadf942 100755
--- a/src/io/piethernet.h
+++ b/src/io/piethernet.h
@@ -52,7 +52,8 @@ public:
 		SeparateSockets /** If this parameter is set, %PIEthernet will initialize two different sockets,
 							for receive and send, instead of single one. Disabled by default */ = 0x4,
 		MulticastLoop /** Enable receiving multicast packets from same host. Enabled by default */ = 0x8,
-		KeepConnection /** Automatic reconnect TCP connection on disconnect. Enabled by default */ = 0x10
+		KeepConnection /** Automatic reconnect TCP connection on disconnect. Enabled by default */ = 0x10,
+		DisonnectOnTimeout /** Disconnect TCP connection on read timeout expired. Disabled by default */ = 0x20
 	};
 
 	//! Contructs %PIEthernet with type "type", read address "ip_port" and parameters "params"
diff --git a/src/thread/pimutex.cpp b/src/thread/pimutex.cpp
index bbbf58ce..77955824 100755
--- a/src/thread/pimutex.cpp
+++ b/src/thread/pimutex.cpp
@@ -43,7 +43,10 @@ PIMutex::PIMutex() {
 	mutex = CreateMutex(0, false, 0);
 #else
 	pthread_mutexattr_t attr;
+	memset(&attr, 0, sizeof(attr));
 	pthread_mutexattr_init(&attr);
+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL);
+	memset(&mutex, 0, sizeof(mutex));
 	pthread_mutex_init(&mutex, &attr);
 	pthread_mutexattr_destroy(&attr);
 #endif
diff --git a/src/thread/pithread.cpp b/src/thread/pithread.cpp
index 1faf3bc6..c41e2d12 100755
--- a/src/thread/pithread.cpp
+++ b/src/thread/pithread.cpp
@@ -103,7 +103,7 @@ PIThread::~PIThread() {
 	if (!running_ || thread == 0) return;
 #ifndef WINDOWS
 #  ifdef ANDROID
-	pthread_kill(thread, SIGSTOP);
+	pthread_kill(thread, SIGTERM);
 #  else
 	pthread_cancel(thread);
 #  endif