I was recording on a 2.6ghz PIV computer with a PCI firewire card and a Presonus Firebox. It worked fine but the CPU was often overtaxed and gave me some clicks or pops. I just "upgraded" to a much more powerful computer. I ditched the whole hard drive with Vista installed, installed a new hard drive and put Windows XP on it. I'll try to arrange some sort of dual boot thing later on. I installed my Cubase SX3 and Waves plugins fine and set it all up, but my Firebox seems to have a low level of static that I can hear through my monitors. The sound gets louder when the hard drive is working, etc. The volume control on the Firebox seems to have no effect on the static. Only the monitor volume control seems to matter. I am not sure whether this noise is getting recorded. It is a shame because this new computer is fast as hell and really rips through the software. Cubase starts up so quickly now. I had the same problem when I was running Vista. Dell suggested downloading the newest bios- no effect. I updated the firmware on the Firebox- no effect. I think perhaps a PCI-e Firewire card might work. Obviously, electrical noise is somehow getting through the Firewire cable. It sounds like radio static and is relatively quiet, but noticeable when nothing is playing over the speakers. Again, the other computer I used with the same Firebox and monitors was fine. I am running the Firebox through a Firewire port attached to the motherboard currently.