Hi Ceki, I know this isn't the right place/forum but I've noticed that the Log4cxx is using your server called: ShortSocketServer author: Ceki Gulcu and I'm having problems configuring it to work with Log4Cxx client. I was trying to get the Lockback SimpleSocketServer to communicate with Log4cxx client but I was unsuccessful too and in BOTH cases I got the following error: ERROR [main] org.apache.log4j.net.SocketNode (SocketNode.java:59) Could not open ObjectInputStream to Socket[addr=/127.0.0.1,port=2336,localport=6000] java.io.StreamCorruptedException: invalid stream header: 3C6C6F67 at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:783) at java.io.ObjectInputStream.<init>(ObjectInputStream.java:280) at org.apache.log4j.net.SocketNode.<init>(SocketNode.java:55) at org.apache.log4j.net.ShortSocketServer.main(ShortSocketServer.java:74) I thought maybe you could help me out a little... you know more about this than me :-) Is it even possible to mix these two guys and have them talk to each other? Please let me know. Thanks a lot. Greg.