I have a iMac 266 ghz with 2mb ram running on leopard. Although the video editing is smooth, I have a big problem. When I connect my camcorder the the computer (canon xm2 - firewire), my computer just does not register that the XM2 is connected. the problem is this, because I have a MacBook External hardrive connected to my iMac (firewire), BOTH the camcorder and MacBook fail to respond. I had the same problem when I had a P.C (Windows Prof). Is it a firewire 'overload'?. To get my camcorder to capture, I have to unplug the MacBook. Its a catch 22 because I book the Macbook (500gb) to save my Prem Pro projects on!. Any tips would be great!. thanks.