Slightly different problem with incoming mail.....
After a bit of a gap since the last problems MM seems to be back to its old tricks again. Twice in the last week the new mail icon shows new mail, its physically there as i can open it, read it, see the attachments and then within the 10 seconds or so it takes to log to the server and check for new mail the new emails have gone. Its not in another folder, it hasn't been deleted, its not in my iphone email, my web based MM email or on my mail on my macbook!!!!
Its getting beyond a joke and as there is a gap between the times it happens i think its something happening at the apple server end. Unfortunately my first year of MM is getting close (well, 3 months away) and im seriously thinking about why i should stay with this "service". If you can call it that.