I've had my iMac G5 for 5 years and I have always been able to import video from my Sony Handycam into iMovie HD via the firewire connection. Starting yesterday, when I connect my Handycam, iMovie HD says "No camera connected". I tried a different firewire cable but that did not solve the problem. I have no other devices that use firewire for me to test if the iMac's firewire port is the problem. And I don't have any other computers to connect my Handycam to for checking if the camera has the problem. Any suggestions?