MacBook Closed-Lid Operation Problems

I currently have the new 24-inch Apple Cinema Dispaly connected to my MacBook. Whenever I have the lid closed for more than 15-20 minutes or so, the MacBook begins to get very hot and applications begin to run slow. Has anyone else experienced this and if so, any suggestions?
Regards,
Rybo

Rybo Himself wrote:
I currently have the new 24-inch Apple Cinema Dispaly connected to my MacBook. Whenever I have the lid closed for more than 15-20 minutes or so, the MacBook begins to get very hot and applications begin to run slow. Has anyone else experienced this and if so, any suggestions?
Not seen this myself but does it only happen with the lid closed? Is there anything you do (eg a particular application) only when the machine is closed? You could try Activity Monitor and look for a runaway process (ie sustained high CPU usage). I think this would explain the machine getting hot, and then the slowdown as the CPUs throttle-back to reduce heat output. It does not explain why this only happens lid closed though.

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    Message was edited by: titusm

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