yes, that's exactly it.
I have a conflict between my IBN ultranav keyboard drivers and the logitech MX revolution mouse.
I just can't get the logitech software to see my mouse so I can get the 'advanced features'.
A note to anyone considering this combo: IBM and logitech hate each other. Their drivers are conflicting. Pretty much every piece of hardware made by logitech will not work on an IBM laptop or external keyboard (ultranav). Their forums are plagued with problems reporting this. There's a solution that involved 4 reboots, but didn't work for me.