imsoaddicted: Does the keyboard still respond? That is if you press the "num lock" button, the num lock light on the keyboard lights up?
I don't know.... just seems very strange - I rarely see a mouse that breaks, let alone 3 of them.... the only thing I can think of is a PC problem, but I'm not sure what it would be.
When it freezes up, after you reboot your computer do they work again for awhile or broke right away?