I have a PC running Win XP Pro (SP3) with a 3GHz processor and 3.5 GB of RAM. I've been using a Logitech MX310 optical mouse on this PC for four years without problems. Now it freezes from time to time -- won't move the cursor, won't communicate a click to the computer -- for a few seconds at a time.
I have tried using different physical USB ports on the PC; the problem persists.
I have tried swapping the mouse with an identical mouse from a different computer; the problem persists on this computer. It is a problem with the computer, not the mouse.
The computer has plenty of free space on the hard drive (200 GB), and the task manager does not show unusually high CPU usage.
What could I try next to diagnose this problem?