If you're running Vista RTM on a Toshiba Tecra M4, DO NOT UNDER ANY CIRCUMSTANCES upgrade your BIOS to either interim version 2.01 or the currently-released 3.1. Both versions are poorly designed, and will cause a catastrophic crash of the video card if you try to bring the system back from a reduced-power state. Your best bet is to stay on version 1.70 until Vista is available to consumers in January... and even then I'd recommend waiting.