I realise there are a plethora of threads already on the subject of FalloutNV crashing, but I came across an odd point a day or two ago when trying to fix it.

Some minor information to narrow the scope a little (will post DXDIAG and so forth if requested): I'm running Vista x64 with an EVGA GTX 480. All settings high, resolution 1920x1200; ansiotropic filtering and anti-aliasing off.

I was running on the "260.63_desktop_win7_winvista_64bit_international_beta" beta drivers from nvidia and decided to update after various work arounds for this crashing bug didn't work out.
I updated to "260.89_desktop_win7_winvista_64bit_international_whql" and it seemed to solve the problem, at least; until I discovered when I rebooted, the problem reappeared.

Currently able to play only after I rerun the 260.89 driver installation utility from nvidia. Saves weren't being corrupted as I've seen some people mention and can fully resume using quick, auto and hard saves.

Anyone have a clue what could be going on?

Hello friend,
nVidia 260.99 drivers (WHQL) have just been released today.
These claim to include FalloutNV fixes...
Regards

I installed those yesterday and I'm still in the same situation. Seems to lag a tad more when indoors with the pipboys light on too, /shrug.

Ahwell, time to rerun the installer so I can play new vegas :>