Yes well maya does have a tendency of putting your system on itsn knees, sorry, Since i bet youve never used a prog that requires this much from your machine (probably not even close), so i cant say much about the stability of your system.
I cant say anyting on your drivers since im using a wildcat II and some oxygen cards (www.3dlabs.com) at the moment. AW seems to have some gudelines on this but maybe someone else on this forum knows better.
BTW it might be some other driver that causes this like the motherboard bios, agp drivers etc... even the soundcard, r more likley your network card.