I had this problem a few days ago and I installed new ar5211 file from a newer version and thought I had it fixed. Well just a few minutes ago I got the blue screen again but it just flashed and restarted my machine so I don't know if it is the same ar file again. Not sure if you are around Howard this late but you helped me out last time and everything worked for the last few days just fine. Anyway here is the minidump. I only have the one because it just happened.