I have the same issue, Processor Thermal Trip, and I use an IR remote so I have to walk up to the unit and power-cycle it to get it to boot up. Since its a quick power-cycle, the temperature hasn't changed so it's not a thermal issue. It looks more like a race condition in the BIOS firmware or a random bad sensor reading in the hardware..
Product Code: BOXDN2820FYKH0
Batch: CNG63CP002
S/N: G6YK352000PB
Version: H22962-100
Date of Manufacture: 28DEC2013
BIOS: 41
OS: OpenElec 4.2.1 Generic.x86_64
Crucial M500 2.5in Solid State Drive (120GB)
Crucial 4GB DDR3-1600 (CT51264BF160BJ)
Can I still get a warranty replacement? It's less than a year old.