Here is a problem that does not seem uncommon among XP users, but I am not sure the often recommended "cure" is applicable to me...
Usually after a few hours use, although it could happen much earlier, the mouse appears not working, that is, the cursor no longer moves on the screen, although other activities in the background still occur, and even the hourglass will appear on the stuck arrow once in a while. I am using a wired mouse, so it is not a battery problem, and once I reboot, the mouse is completely functional again, discounting any connection problems.
I have used all my anti-virus, anti-spyware programs, and the problem does not rest there. I have deleted the Fellowes software that came with the mouse, and the problem still occurs. I have deleted the microsoft mouse and keyboard software and rebooted, and the new download didn't help.
Googling around shows that this problem has been around quite a while, with wired and wireless, nearly all makes of mice, with two items in common: (1.) They all running Windows XP, SP2, and (2.) They all used upgraded (8x.xxx) software for their nVidia card. In fact, the concensus seems to be that once they downgraded their software to 7x or even 6x series, the problem goes away.
My questions are (1) has anyone else had this problem and found another cure, and (2) how do I find out if I have a nVidia card (without, shudder, opening my machine)?