Sorry if this has been posted elsewhere... I actually did a search and couldn't find any relevant threads. Anyway, has anyone else besides me experienced problems RECEIVING video MMS messages from other people? Ever since I got an iPhone4, I can no longer play the video MMS messages I receive. They all get stuck on the first frame. And I know the messages themselves are fine because the same messages sent to other AT&T phones play just fine. Has anyone else run into this???