On my Nokia 6620, Anything i try to do it seems to lag and come up with this message. It then trys to restart but i have to help it by pushing the power key a couple times. On occasion, not everytime, i have to set the date and time again and all my contacts and setting are erased, the MMC is fine though. Its really a pain cause sometimes i cant even answer a call because it freezes. Im going to take it back but any ideas what was wrong?