Ran into problems when upgraded to catalyst 6.10 (from 6.8) All working fine before but after did this began to get more and more reboots and BSOD. Initially happening on high VGU use stuff like playing oblivion but then happening all the time making booting into XP almost impossible. Microsfoft crash analysis pointed to video driver issue and/or incompatible drivers
Once removed 6.10 in VGA mode and re-installed 6.8 no probs
I dont know if this is relevant but i had problems with 6.10 drivers too though i think it was because i made a mess of installing them. istead of uninstalling the old drivers(while i always do) i jusr installed 6.10 over what drivers i had and on reboot i had lots of problems till i uninstalled and reinstalled 6.10 again.
However the only probs i had were in Company of Heros where i got lots of VPU recover errors and crashes. All seems fine now since the COH patch though.