Originally Posted by tspinillo
Have you tried the PNY 5341 version of the driver?
His lockups most likely have nothing to do with the graphics card or driver, but a Nforce2 bios/hardware/kernel bug that is causing the lockup. (it will hang/crash with the nv and no nvidia driver installed.)
A lot people have had lock up problems with the 2.6 kernels and the kernel developers are looking for a work around to fix the issue.