My Powerbook is running great, I am stil new to the Apple Macintosh world and my PowerBook is now just under one year.

As said, everything is running smoothly except for one thing.

When I render a movie using any of the tools, PSPWare, iMovie HD (5), Final Cut Pro, Handbrake the system freezes completely no mouse movements no keyboard access. Only cold restart works.

I downloaded the the 10.4.5 combo patch and reapplied it. this made the system furter into the video but the problem still ocurrs?

Where can I look?

This was fine before I had no issues with it.

Help would be great!