Penumbra Scrolling Graphics Problem

[msp301]

Ok, thanks for your help, I've messed about and killed compiz, but lost the ability to run Overture ... will try a reinstall as both Black Plague & Requiem seem to be running fine ... as I still want to have compiz for general desktop use, is there a way that when the game is launched it could turn compiz off, but then back on when I quit the game ?? Thanks again for your help, this could confirm that theb X4500 can work as well as the X3100