Sonds like the firmware got corrupted. My wife took her 3GS (1 year old to the day) in to the apple store last night. A tech looked at it, found it reported ~8 hours of battery life but 700 days of standby time. Obviously this was not right, found the firmware was corrupted and asked if she would permit a wipe and restore. Apparently this caused some errors in the back and a few min later he came back with a new phone for her.
As it was the last day of the included warranty it only cost us a few minutes of our time. Note that as it was the firmware that was the problem she could not do a full restore from her computer. Just reinstalled apps, some restored data some did not. And had to re-setup to her liking.
Some trophy enabled games failed to init properly (Heavy Rain is one such game) and would quit. While others would load and play fine. I played Fallout 3 sunday evening but the catch was it zero'd out my local trophy data, as if I had never played the game. Not sure what would have happened if I earned one during my playtime that night. If anyone is curious now that everything working again I restored my trophies by launching the game (init to 0%) then quit and re-synced my trophy data with the PSN servers. This restored all the missing data.
Also there were reports of some fat PS3's that were not effected by the bug at all. Just like the new slim models.
1 + 1 = 3, for large values of 1.