Well good luck then. Let us know how it goes. BF 3 is by the far the worse experience i have with stability on the PC. All other games so far no problem. Maybe its time to upgrade to 64-bit after all.

EDIT: Also check if ur GFX is multi-GPU, since ive heard and experience when SLI, got issues. Mine was hd4870x2 so is crossfire. Was really unstable. But after Disabling Catalyst AI, it was very much better, though it crashed at the wall too (hence the bededit thingie). Funny thing is, the crash at the wall only happened after the last update.