I have a 15" powerbook G4 PPC. That is dying on me... First I was getting terrible response time out of my computer, loading a website with a decent amount of content on it cause beachball of doom. That wont ever load forcing me to have to force quit safari. I only had modest ram, so I bought a 1 gig stick. This helped miniscule at best, after 3 months or so I was getting beachball again. I replaced my hardrive recently. Since then everything has gone from bad to worse! My screen when ever I have a lot of white on the screen. Begins flickering like a strobe light. Second my D key wont type with out a lot of force exerted to it. Third I get the beachball of doom, from opening a text document! Youtube videos wont play without skipping frames and of course the beachball!!. Fourth I'm not getting software updates, I check it periodically and It says there are no software updates even though this is not true. My Powerbook turned 6 years old last month, but honestly I was expecting a little longer life span out of my first apple product. How can fix these problems!!!!!!!!!!! If they are unable to fix, hopefully this piece of $h!t will last until they update the Macbooks in which case I will buy a new one.