IMac Shutting Down when DVD player is in use

So, I know a lot of folks have been mentioning the new iMacs heating up and shutting down. I'm managing my heat issues okay to this point, and I use Photoshop, Illustrator, and InDesign every day.
But - the thing keeps shutting down when I try to play a DVD!
Anyone? This one has me stumped.

You are connecting the mini display port on the 2010 iMac to WHAT to try and get TDM to work?

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    Message was edited by: myhighway
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