Richard

The mouse pointer moves on the screen and even clicks on icons and the click
opens the program associated with the icon. All of this continues when the
PC is:

1. Not connected to the internet.

2. Not connected to a network.

3. Mouse unpluged from the PC.

It was cured when I ran various anti-spyware programs but came back after my
family used the PC for the day while connected to the internet. I got rid of
this bad behavior a second time by running Vista's system restore utility to
an earlier system time status.

Since it came back I assume this is a virus or worm or some other software
issue.

Richard