Did you try resetting the SMC? The SMC could affect the following: Fans The computer's fans speed up quickly and remain at high speed. The computer's fans run at high speed although the computer is not experiencing heavy usage and is properly ventilated. Lights The keyboard backlight appears to behave incorrectly (on Mac computers that have this feature). The Status Indicator Light (SIL) appears to behave incorrectly (on Mac computers that have an SIL). Battery indicator lights, if present, appear to behave incorrectly (on portables that use non-removable batteries). The display backlight doesn't respond correctly to ambient light changes on Mac computers that have this feature. Power The computer doesn't respond to the power button when pressed. A portable Mac doesn't appear to respond properly when you close or open the lid. The computer sleeps or shuts down unexpectedly. The battery does not appear to be charging properly. The MagSafe power adaptor LED doesn't appear to indicate the correct activity....

I am having the exact same problem as well. After running all the troubleshooting guides, I broke down and called Apple Support. After having me re-run all the things I had already done in the troubleshooting, he said he had no idea what was wrong and that I would have to take it to Apple or an authorized repair place. Mark or Chad, what happened with yours? Thanks, Holly