I have the same problem- I don't think I've been minimizing it, either. I wound up doing a force quit to bail...

Given that I can't download anything anyway (wait for busy, then can not download messages), I guess it isn't much of an issue. I paid for the Pro, installed on OS X, and haven't downloaded one single thing since. This is really frustrating. Who are you all writing to? I want to add my name to the pile...