Mail problems

Mail is acting up on me a lot lately. I only have one account on it right now, and it's an exchange account. A lot of times, when I open it and it starts to check mail for the first time, the progress pie chart starts to go around, but freezes. Mail is completely functional, except for that. If I choose to quit while it's frozen, the window will close, but the program won't quit. It doesn't say it's unresponsive though in Activity Monitor, but Force Quitting is the only way to quit it. I try reopening it, and it does it again.

And while we're on the subject of email, I use Google Notifier to check my Gmail account, but it also will freeze and crash on my constantly. Anyone got any solutions?

Sometimes rebooting helps both of these, but it's usually only a temporary solution. With as stable as OS X is supposed to be, I've been having quite a few random apps here and there start acting up.

 

Umm.... thanks?