I have Early 2008 MBP. Yesterday I found something weird about the gasket. It produced weird creaking sound as if it is not tight, when I landed my hand on the palm rest. Few hours after I noticed that, it stopped to produce the sound. Today when I watched a video it started to produce that creaking sound again every time I landed my hand on the palm rest. Is this common problem of the MBP gasket plastic? Does this problem relate to heat? Because the part which produce the sound only at the left side near the HDD. Has someone had this kind of problem before?