Every so often, when I try to zoom/rotate, I noticed that my view is acting like its stuck in "Pan" mode (similar to if you hold down the "Shift" key and middle mouse key). The only way to get back to normal is to tap on the shift key on the keyboard. Now what is strange is I've changed my keyboard 3 times using brand new keyboards so I am assuming that it is software related rather than hardware. I can't believe that 3 keyboards will be bad.

Has anyone noticed this on their system?

I am using an M6600 Precision laptop on a docking station with two monitors, a single keyboard and a wired mouse.