I've been using a 1 ghz Titanium Powerbook for 5 years now. I've enjoyed it with no problems and decided to purchase the new Macbook Pro 2.5. Amazing difference in machines and I hope that this one will last just as long. One of the differences that I noticed was the warm temperature coming from the wrist rests (compared to the TI). It's certainly not hot or too warm to rest my wrist on, but it is definitely there, mostly on the left side. I'm guessing this is because of the different material that the wrist rests are made of (Plastic? vs Aluminum?), but I wanted to make sure this was normal. I'm a little surprised the fans aren't running faster to keep up with the heat. Although my TI sounded like a hair dryer, it ran pretty cool. I've been watching the temps... nothing unusual there.