On an Oneiric amd64 (i.e., 64-bit) system, GNOME 3.2 is flickering and crashing. I installed ATI Driver 11.10 and GNOME ran much better. I then compiled kernel 3.1 which caused Firefox and Chrome to crash. I purged kernel 3.1 and Firefox and Chrome are fine with kernels 3.0.013 and 188.8.131.52.
However, GNOME 3.2 is flickering more frequently and will now crash (the menu is gone and Alt-F2-r will not work. Only recourse is to to do a hard shutdown and reboot. It wasn't crashing at all before kernel 3.1 was compiled and installed. The flickering is frequent, the crashing is new. I had a flicker issue once in a while before I installed kernel 3.1, but not this frequently.
Any thoughts on how to reduce the flickering and crashing?