I bought my wife a 16GB Touch last week. Today she said that she was entering some info in to 'Calendar' and screen went dark and then back to the home screen. She said that it happened twice. I had her turn the Touch off and restart. Wanted to see if anyone has had this problem. I would assume that the firmware is up to date as the Touch is literally a few weeks old, but I"ll check when I get home. Any input would be appreciated.