I have Vista SP1 running on a custom built machine only a few months old. From the day I set it up Vista has on the odd occasion just frozen up on me. Everything stops - the clock, mouse, keyboard. Only a hard reboot fixes it. Sometimes I would go weeks at a time without it freezing, but over the past 5 days it's been happening more and more to the point where I can't actually use the machine.
Here's some information about my machine.
Intel Core Quad CPU Q9300 2.50GHz
3 monitors running on two ATI Radeon graphics cards
Logitech wireless mouse and keyboard
Can someone please help before I go crazy!