I've had this happen several times, the system just freezes and there's no way out except restarting. It's only a specific app that freezes though. Sometimes it's a game at boot (downloaded) sometimes it's the browser. When I'm playing music at the same time it doesn't freeze that, just the browser and I can't PS button out of it. I've been making sure it has good ventilation, the only part that's warm (not hot) is the botttom, the same if it's on its side or horizontal. Anyone have anything like this happen? (I've had it happen with both 2.30 and 2.35).