My Powerbook is perfectly fine for all my paid work, email etc.
I also edit films and make dvds on it as part of my job. (dvds of workshops, people signing etc).
iMovie HD and iDVD are fine on it, tho processing scene transitions, effects, and encoding for high-quality DVDs take a while.
It's still a lovely machine and does almost everything I want.
The main problems are mechanical
- Firewire port is burn-out, am using a PC card for firewire, but it won't work with Target mode, which is a pain for backups (until Leopard comes out.)
- the internal cable to the LCD is wearing through inside the hinge - blacking out the bottom 2 inches of the screen. I've already had it replaced once - cost £150, and it is wearing through again. My PB is now almost non-portable, as I try to close the lid as little as possible.
- the DVD burner is becoming unreliable with modern media
- often it won't wake from sleep caused by low battery (even if fully recharged).
Am waiting for santa rosa to come out before jumping to a Macbook. (that's my excuse anyway).