I have a week 26 15.4" Macbook Pro... no mooing.
Today, oddly enough, the Core Duo temperature is about 10 degrees cooler than it has been... which actually makes it comfortable to use. It seems that once it starts creeping up into the mid 50's it gets uncomfortable, and mine has been no higher than 50 all night.
Not sure what that's all about. Last night I callibrated the battery as indicated in the instructions, but I don't see how that could have anything to do with it?? But I'm not complaining...