After this happened to me (once so far) I did a ton of homework in addition to removing a few apps that I thought might be less than stable. The research opened my eyes to the fact that it is an issue that's widespread, across the Android spectrum, and one that also affects iPhone users. Unless there's an identified fix for this in an upcoming OS upgrade, the only way I would feel comfortoble with the phone staying on continuously would be to revert back to my trusty Nokia dumb phone. We all have our own reasons for staying - or not staying - with the Captivate, but one thing's for sure...the random shutdown issue is not isolated to the Captivate. If you jump ship to another Android, or even an iPhone you may wind up banging your head against the wall in frustration because the issue has once again reared its ugly head. And the only thing you get from banging your head against the wall is a headache.