Vino-server (VNC) doesn’t work
I experienced another nasty bug with vino server and Ubuntu 10.10 (some reports the same thing on other Distros, even on older versions of Ubuntu): After authenticating on VNC, the client windows is not updated.
All the events are sent by mouse correctly on the desktop (you can see the mouse moving and reacting at left/right click), but the VNC client window is not updated, in other words I see only the first image what I get it when I connected first time.
I found a workaround for this problem: uninstall compiz and everything will be all right. I believe this is a bug in vino-server and should be fixed on the next updates, but until then, removing the compiz is the best workaround. The bug is already reported here.