My Samsung Moment has had serious issues (all of which I confirmed wasn't just my particular phone after reading all these similar posts and having it replaced once.) It would get seriously hot, the battery lasted 2-3 hours if I was lucky, it dialed random numbers, opened random apps (by itself!), lost internet and even phone signal, would put itself in mute or airplane mode randomly, you name it...it did it. Last week it "mini bricked" itself for an hour (stuck on samsung splash boot screen)...of course this hour was the one time I desperately needed it to work for various reasons. Took it to the Sprint store and big surprise, they found nothing wrong with it. The guy just happened to have a Moment himself and had me download ATK (Advanced Task Killer). Immediately every issue was gone! I went from ready to drop kick this @#$$@!! phone off a cliff to being in love with it all over again. I'm sure there are other task killers in Market that might do the same thing, but this one worked for me. I hope this helps everyone else having all of the frustrating issues this model can have.