This has been happening for a while when I run blender.
Currently I am using Ibex 64 with the fglrx 8-11 driver.
When I use blender in windowed mode, my gnome panels turn black (icons included) if I hover over icons on my panel they refresh, or if I hide/unhide the panel it refreshes fine.
Any idea what causes this?
Is it isolated to ATI video cards?