comp.os.linux.networking

I was able to run a vncserver and connect to it without a problem.
After switching to xfce from kde, viewer connects but all I get is a
blank screen with mouse working.

I am running the server on a Kubuntu machine. I tried connecting to it
via TightVNC from a Windows machine as well as via vncviewer to
localhost from the Linux server itself.

When I run the server I get the following log:

4/03/08 13:32:12 Xvnc version 3.3.7 - built May 24 2007 12:47:11
24/03/08 13:32:12 Copyright (C) 2002-2003 RealVNC Ltd.
24/03/08 13:32:12 Copyright (C) 1994-2000 AT&T Laboratories Cambridge.
24/03/08 13:32:12 All Rights Reserved.
24/03/08 13:32:12 See http://www.realvnc.com for information on VNC
24/03/08 13:32:12 Desktop name 'X' (cellular:1)
24/03/08 13:32:12 Protocol version supported 3.3
24/03/08 13:32:12 Listening for VNC connections on TCP port 5901

When I connect from the client using vncviewer, this additional
message is received:

24/03/08 13:32:53 Got connection from client 0.0.0.0
24/03/08 13:32:53 Protocol version 3.3
24/03/08 13:32:55 Pixel format for client 0.0.0.0:
24/03/08 13:32:55 8 bpp, depth 6
24/03/08 13:32:55 true colour: max r 3 g 3 b 3, shift r 4 g 2 b 0
24/03/08 13:32:55 rfbProcessClientNormalMessage: ignoring unknown
encoding type -239
24/03/08 13:32:55 rfbProcessClientNormalMessage: ignoring unknown
encoding type -223
24/03/08 13:32:55 Using ZRLE encoding for client 0.0.0.0

I don't know how to debug it and logs do not tell much. Does anybody
have any idea what would be the cause?

Thanks...