Yeah, I saw that thread, but didn't see anything regarding ATI cards, so none of the fixes are applicable. Thanks for the response, though. :)

If anyone else has any ideas, please feel free to...

Using Maya UNL on a Sony Laptop, (not the greatest platform, but for the most part, it does the job). When Maya's first opened, (usually in persp view) it works great! Smooth panning, tumbling, etc....