Closed lid, fan continued to run, body got extremely hot

My wife closed the lid to our early 2011 MBP (15" 2.0 GHz) and put it in the sleeve. After about 6 hours she went to use it and realized that the fan was going very loudly and the body was too hot for her to pick up. I took it out, opened it up to do a hard shut down, and let it cool for about 30 minutes. After that I booted it up and am using it to type this right now. Seems to be working fine, but has anyone else had this problem, and would you know what the cause may be?
Message was edited by: chadwatson

It sounds like the computer didn't go into sleep mode properly and maybe even froze in an active state. Being in a sleeve it would be easy to overheat but I'm surprised it didn't self shutdown after reaching a high enough temp. I'm leaning on that it froze when you closed the lid and never went into sleep mode properly, which is why the safety never kicked in and let the computer heat up...

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Closed lid, fan continued to run, body got extremely hot

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