Then installed and played Dead Trigger 2 for about 5 minutes.
Went to take some food out of the oven, came back and phone was off.
Turned it back on and about 3 seconds later it says "High temperature detecting, shutting down...." and phones goes off.
I got the phone yesterday, used it to browse web and stuff for hours with no problem.
Rooted and CWM'd, then played dead trigger 2 for 10 minutes and it's overheated.
I DO have SetCPU installed and set to ondemand, possible that it was (obviously since Dead Trigger was running) running at max clocks for that 10 minutes and caused it to over heat?
Took my case off and felt the phone, didn't feel hot at all anywhere, so not sure if it really overheated or not...?