So ever since I migrated from mobileme to iCloud, my push email has been spotty at best. Any one else having this issue? here is the link to the apple forums on the issue. Its seems like some of the people have been having the issue for months, and some of us it just started on or around may 23rd or 24th. It may not actually have anything to do with the iCloud upgrade, I just happened to upgrade shortly before the mentioned dates.