Alex, Thanks for your reply. Actually, I asked it because I'm wainting for my PowerLogix 1,35Ghz which should be in here in two weeks. Not knowing if this operation was already mentioned in the PL upgrade literature/manual, I was just curious if that could/should make a difference. I'm glad PowerLogix has it metioned though, as I definitely don't want bad surprises compromising Cube's parts/ports. Once again, thanks for satisfying my curiosity. LM >>> alexmay at lineone.net - 2004/06/02 12:27 PM >>> I have pressed the CUDA button because it was part of the Powerlogix procedure. I have had no problems with my firewire ports, though. I am constantly using my firewire DVD burner and DV camera. Alex