Mouse pointer drifting

I wonder whether anyone can advise me. Over recent weeks I have been getting
increasing problems with the mouse pointer drifting to the top or bottom of
the screen, and more recently there being a delay of about 2 secs. in
responding to mouse movements. This is intermittent and does not seem to
coincide with other specific and obvious programs or processes.

I have a Toshiba 3000 Satellite laptop running WindowsME, 128 + 256mb RAM,
Pentium PIII, Belkin Mini Optical Scroll Mouse connected by USB.

I have done the following to try to correct the problem:

cleaned mouse lenses
tried mouse on different mats and surfaces
tried a standard mouse (still occurs)
updated display and mouse drivers from manufacturers websites
reduced hardware acceleration
adjusted mouse speed settings in control panel
rebooted frequently (problem still there after reboot)

I have the feeling that this is something to do with the OS or drivers but
any advice on what else to consider, or how else to diagnose this problem
would be very welcome!

TIA

Tritoneur wrote:
I wonder whether anyone can advise me. Over recent weeks I have been
getting increasing problems with the mouse pointer drifting to the
top or bottom of the screen, and more recently there being a delay of
about 2 secs. in responding to mouse movements. This is intermittent
and does not seem to coincide with other specific and obvious
programs or processes.

I have a Toshiba 3000 Satellite laptop running WindowsME, 128 + 256mb
RAM, Pentium PIII, Belkin Mini Optical Scroll Mouse connected by USB.

I have done the following to try to correct the problem:

cleaned mouse lenses
tried mouse on different mats and surfaces
tried a standard mouse (still occurs)
updated display and mouse drivers from manufacturers websites
reduced hardware acceleration
adjusted mouse speed settings in control panel
rebooted frequently (problem still there after reboot)

I have the feeling that this is something to do with the OS or
drivers but any advice on what else to consider, or how else to
diagnose this problem would be very welcome!

TIA

Hmmm.....Seems as if the patented Accupoint pointer button had got jammed
and was interfering. Never mind, a good diagnostic exercise, and thanks to
those that read this post.