When a computer that freezes, isn’t really frozen

After experiencing a lot of frustration with my work computer freezing up, I bought a new Gateway FX6860, tested it home over the weekend (my evaluation here), and brought it to work today. But at the office, the new computer had exactly the same issues as the old one.

Was this related to some ISP issue? We were hacked at work? Did the computer get screwed up during the transport? The real problem was fairly simple, but overlooked. At work, my favorite logitech trackball that had a left click button that would go on the fritz, and make it seem as though the computer was freezing up.