Are there known mouse bugs with Office and HP Pavillions?

[Riverpixel]

I have an HP Pavillion dv8000. I run Office 2003. I attach an optical
Microsoft corded USB wheel mouse and run Intellipoint 5.5 software. My caps
lock will turn on and off at will sometimes and my mouse cursor will
highlight things and not be able to unhighlight them. All this happens in
Word or Outlook or some Office application. Only rebooting seems to clear it
up. I've tried other Microsoft mice with no help. HP says it may be a
software conflict. Any other HP and Office users experience this?

 

[DatabaseBen]

one option is to use a 5 dollar optical mouse
and let windows give a generic driver.

another is to see if the issue is found
while in a safe mode environment

and yet another, another....etc......