Try going to device manager and uninstall the mouse driver. Then reboot and
let the system detect the mouse again. This process is a bit tricky since
you will use lose mouse operation when you uninstall the driver. To reboot
you can press ctrl-alt-delete and navigate using keys to the shutdown
option.

This is not a sure thing to fix your problem, but it is worth a try. It
sounds to me like a bad device driver. You may also try doing the same with
the video display driver if the mouse driver does not fix the problem. I
don't know why, but I have seen the display driver cause seemingly unrelated
problems.

Also, as suggested by Hugh, you might try using another mouse - if yours is
a PS/2, then try a USB, and vice versa. Good luck.



-----Original Message-----
I use Windows XP SP3 with all the current updates and use Avast anti-virus
along with other security programs. The computer is about six years old. I
am not that computer savvy. Recently I started having problems using the
mouse. The problem may have started with the last Windows XP update. 

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