I've had my Evo 4g since Friday morning, so nearly a week now. In that time, I've taken a fair handful of pictures and videos with it, uploaded some to flickr and twitpic, imported some to my computer--and today I noticed that most of them had vanished from my phone, including some which I had not uploaded or imported anywhere! Has anyone else experienced this issue? Any advice? I'm very upset at losing pictures, and more at the thought that it could happen again.