Question at the bottom! Me: new to this forum, have had a MacBook Core 2 2.0 for a couple of weeks. It was "given" to me under Applecare to replace my 18 month old iBook 14 G4 1.42 which had been butchered by Flextronics (Tennessee repair contractor to Apple) in three tries to fix a simple problem (warped bezel). I bought my iBook 14 to replace my iBook 12 G3, because that one was on its third logic board and I was afraid of life without warranty. I sold it with full disclosure. So, I'm nothing if not loyal, and I love the MacBook so far. However, I had already researched it before arrival, and was already fairly sure that I would at some point examine it for proper thermal paste application. I know there I can use a fan control app, and have not yet installed a temperature one because reviews are mixed, but those are band-aids if there's too much goo in the first place. The MacBook is quite a bit warmer than my iBook(s) were. 1)Has excess goo generally been found in the MB, or just the MBP? 2)Has it generally been found in late ones? 3)Important: I can just buy Arctic Silver, but are there any opinions on whether some tech could potentially tell I'd been in there just by its look/color? If so, what goo looks original? Apparently, I'm better at fixing this stuff than whomever got hold of my iBook. I bought another Applecare anyway, in case of catastrophe.