Just got the 1.0-8174 drivers. Tried to run ut2004 and it keeps locking up for seconds at a time, eventually freezing the whole machine. Also, the textures go kind of weird, with solid blocks of colour instead of textures on some triangles. I haven't had it running at all on this setup, although I did have it running some time ago on the same hardware and a different install.
I'm hoping I haven't fried the texture RAM or GPU (I haven't been overclocking or anything silly, but one of my case fans did fail). The most interesting bit of the log is probably the these two lines...
[ 3993.404976] NVRM: Xid: 8, Channel 00000003
[ 4019.915357] NVRM: Xid: 8, Channel 00000003
I've tried turning off Fast Writes, but it didn't seem to help.