obviously (my) Ubuntu has problems with the x window system. Every time when I move any window, this window looks rough and choppy on the edges (see http://brainstorm.ubuntu.com/idea/24439/). First ...
I've been dinking with the xorg.conf file on my system and now when I try to start X I get a flickering effect and no usable image. I think (and this is just a guess) that it's a settings out of bound ...