Just chiming in here, I'm getting crashes with various monitoring tools (GPU-Z, Afterburner) as well, using the latest drivers.
Something is definitely up with the latest set(s) of drivers, I've never had BSOD's using these tools in the last years.
My report and follow-up over at the Nvidia boards. Also sent in minidumps, full memory dump and filled in driver feedback. Unfortunately, they say they can't repro.