I've got one of these notebooks. They've replaced my motherboard twice as well as all the cooling system (fan/heat pipe/etc). I'm confident it's a BIOS level issue, that said, after my third (including orig) motherboard the problem went away. I can play 10+ YouTube videos simultaneously now with no issues, before I couldn't get through a single video. I posted this on my blog including a screen shot of the throttle taking place in Windows Resource Monitor. Nice to hear I wasn't alone.