I have a late 2008 MBP 15" Unibody. The LCD developed some noticeable dust under the glass and an authorized Apple service center replaced the LCD (the part replaced was the complete aluminum cover including the LCD). It works just fine - but noticed that the FANs run at the higher RPMs more often and noticeable longer than before. I am wondering if some kind of sensors was not placed properly at the replacement or what else can be going on. Any thoughts?