[dijk182]

The phone is not jailbroken. I've tried reproducing the behaviour the past week, with an app that lists processes running, but it did not occur again...

I have WiFi and Push on, but have had them on for almost a year and haven't seen this happen yet. Besides the battery running low, the phone is also warm when it happens (warm like when I've played a game on it for a bit), but nothing is running in the foreground.

I still think it's the remainder of some program that somehow couldn't be quit by the OS. However, I still have no clue what it might be.

Thanks for the help, sorry for bothering you guys.