diff -up x2goclient-4.0.1.3/sshmasterconnection.cpp.timeout x2goclient-4.0.1.3/sshmasterconnection.cpp
--- x2goclient-4.0.1.3/sshmasterconnection.cpp.timeout	2014-01-22 00:58:25.000000000 -0700
+++ x2goclient-4.0.1.3/sshmasterconnection.cpp	2014-01-22 14:41:07.754428027 -0700
@@ -1445,7 +1445,7 @@ void SshMasterConnection::channelLoop()
         struct timeval tv;
 
         tv.tv_sec = 0;
-        tv.tv_usec = 500;
+        tv.tv_usec = 500000;
 
         int retval;
         int maxsock=-1;