QUOTE(TUUK @ Apr 14 2006, 07:30 PM)
I agree with what pingrr says. Air circulation is non-existent without a case on the unit. I don't know how hot a unit should get internally under normal usage, but based on the fan exhaust, I would imagine any metal surfaces inside would be pretty hot.
Well done for sticking your finger on something hot to let us know just how hot it is.
I wouldn't like to say either way if I thought it was safe to play without a case or not. In one respect, it's being run under conditions it wasn't designed, or probably tested for. I'd grab a pedistal fan or whatever you can find and point it at the 360 while it's running just to cool it off a little.
Hell, even with a case on it couldn't hurt. Wish I'd bought a 360 at launch to help through the cold winters.
I got just the plastic case part off, the metal part is still there, so if you look at my box the top is the metal heat sheild not the internals like this
"http://images.anandtech.com/reviews/system/MS/xbox360/no_cov.jpg", so it still has normal air flow