It's a bit similar, but not really. I am using compiz.
In Bug #82999, it happens only to single windows, happened only on recent versions of compiz and I was able to work around it by changing my xorg.conf.
While this bug not only happens in compiz, but also in beryl and affects the whole screen, not only a couple of windows.
According to the Beryl people this is a more general problem with AIGLX & VNC.
I'll try VNC in feisty again though. Maybe it's fixed.
It's a bit similar, but not really. I am using compiz.
In Bug #82999, it happens only to single windows, happened only on recent versions of compiz and I was able to work around it by changing my xorg.conf.
While this bug not only happens in compiz, but also in beryl and affects the whole screen, not only a couple of windows.
According to the Beryl people this is a more general problem with AIGLX & VNC.
I'll try VNC in feisty again though. Maybe it's fixed.