This is my first post, I apologise for diving right in but I am curious as to if any of you have had a similar experience recently. I purchased a Powerbook G4 (with 3 years of Applecare and a RAM and HDD upgrade) in December 2005. It has the lines problem that it seems many of you are aware of. I've been putting up with this until I was sure there seemed to be a fix - it appears that now Apple is replacing the screens with a line free model. So now I am considering the time is right to call Applecare and ask them about fixing the problem. Unfortunately I have discovered another problem with the Mac - the fan is always on, even at boot from cold, in a cold room, etc. There is no way to stop it. I have checked the temp readouts and it appears the graphics chip is always reading 100 degrees C, no matter what the Mac is being used for. I have heard some reports that this requires a new logic board to fix. So my machine seems to be pretty flawed and in need of some major repair. It seems now I have some hope of getting both repaired. My question is this: when I bought the G4, being a Mac newbie I had no idea about the Intel chip switch and MacBook Pro on the horizon. If the Mac does need the logic board AND screen replacing, would it be worth be asking for a replacement machine in the form of a MacBook Pro, as I feel pretty cheated having been left with a faulty and inferior machine? Is there any chance they would do this or would I be wasting my time? Thanks in advance for your help.