I’m not sure what your experience has been but Gmail IMAP is one slow ass system. On my MacBookPro, I left it running overnight to try and sync everything, but even today I am finding my system feels as though it is underwater. I see beach-balls and find navigating even my inbox to be rather torturous.
Force Quit seems to be the only way out … Guess I’ll stick to web Gmail for now. Perhaps I’ll get lucky and the 2.0 version will show it soon … yeah right.