In light of the upgrades that were released today, I'm curious to know how long others have been rocking their older Macbook Pros. I've still seen G4 Powerbooks out in the wild, and that gives me hope, since I really would rather not have to replace my laptop at the moment. However, as an owner of a 2007 MBP, I've noticed the thing gets crazy-hot anymore and the fans whir up nearly any time I have Photoshop and Firefox 4 open (possibly because Firefox is a memory hog). I've already had the logic board replaced once on account of the faulty nVidia 8600M GT 128MB graphics card, and the battery is getting to the point of "replace me NOW." I've upgraded the hard drive and RAM myself, and I'd like to keep the machine going even longer with a new battery and an SSD Expresscard, but I'm worried about shelling out money for these things if the laptop's not going to last due to heat issues. Apple's always been reputable for quality and longevity, but I'm curious to know from actual MBP owners: how's yours holding up? FYI, my normal usage: Graphic design work using Photoshop, InDesign, Illustrator, and coding HTML/CSS; occasionally I use Final Cut Pro or After Effects for a small project.