I recently just got Mountain Lion and I tried updating the Mail by clicking it. It has now been updating for hours and days when I think it's supposed to be only a few minutes. It seems to just get stuck about quarter way into the download. Now it just stays there forever. I tried force closing the Mail, restarting my Mac and once I reopen the Mail application it just returns back to the place where it got stuck. Anyone can help? Please I'm really desperate. This is ultimately the most frustrating thing I have experienced with my Mac.