At work, I have to restart my computer at least once a week. I'm not sure if it is Windows XP's fault or if it is another program I run. All I know is that afte

At work, I have to restart my computer at least once a week. I'm not sure if it is Windows XP's fault or if it is another program I run. All I know is that after about a week the computer grinds to a halt, taking way too long to do anything reasonable.