You guys may need to watch the temperature of the BM5 when watching HD content.
This happens actually on my macbook air - it shuts pretty much down when this happens to avoid damage until it cooled off.
Not sure if BM5 has any sort of thermal management, it may not be a problem I would just recommend to touch that thing after watching HD for a bit.
Cheers
JK
BS9000, BS2300, BC2, BL2500, BL3, Bl2, BS1, BV8, BC4, A8