Have you recently purchased an Acer Aspire laptop? If so, you may be interested to know that Acer has issued a product recall for certain models. Some of the laptops have a microphone cable on the left hand side, under the palm rest, which may overheat when extreme pressure is applied.
The models in question include the Aspire models AS3410, AS3810T, AS3810TG, AS3810TZ and AS3810TZG which were manufactured before September 15th 2009. Hit up the link for more details to see what you should do if you have one.