I'm having problem with BSD.  i'm running a Xfx 8600gt, in a asus P5N-D MB, 2 GB rams in dual channel, pentium core2 2.8 Ghz. a clean install of out of the box Windows7-64 bit Ult, downloaded all patches from MS. 
 
here's where it gets strange.  if i running windows 7 in "default" theme it i"drops the driver" and crashs in about 30 seconds,  if i run it in "windows classic" theme it seems stable.
i've tried several different drivers...  windows7 default.  nvidia vista's 64, and windows7-64
 
any thoughts?