g5 freezes after 25min runing

Hi,

I have a g5 dual 2.0, with a lacie 320 external hard drive and I´m using a sony dv deck dsr-11. i´m using mac os X 10.4 and final cut pro hd 4.5

Everytime I turn on the computer it freezes after 25 minutes on the clock, it stops answering to the wireless mouse and keyboard and I can´t do anything but restart from the power button.

I took the machine to an applestore and they say there´s nothing wrong with it, that it must be something with one of the peripherals (ápart form the ones mentioned before there´s a apple cinema display as well) or with the electricity instalation in may office.

If anyone can help me I´ll be most grateful.

Snir

post this over at cafe LA, the trouble shooting forum here at lafcpug, Snir.
this forum is exclusively for bugs.

nick