Phone overheating and wiping?

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http://forum.xda-developers.com – Well i had a pleasent suprise of my phone quite litterally burning up in my pocket after browsing on XDA. Unfortuantly i didnt notice and later found my phone off. After plugging it into the charger i had no light which made me panic but magically my phone turned on after a few minutes. Apon bootup the green led flashed 3 times and now my phone appears to be wiped... Any idea what the hell is going on? I was running ViperXL 1.2.0 and had a severly undervolted CPU that i had tested for the past week and was stable. Runing Blaackout Beastmode kernel 3.0. (HowTos)