I've looked around on this site and found users with similar problems.. I have a 1.25 Ghz G4 PowerMac. Recently, I bought an elgato Eyetv hybrid and a USB 2.0 PCI card to plug it into.. Firstly - whenever I opened up the software, it would play TV as it would normally, then crash (randomly.. sometimes 5 minutes of play, sometimes 5 hours). I couldn't really deduce the problem until I removed the EyeTV hybrid. It worked fine for a couple of days until it started crashing again when I used safari/firefox. I went ahead and reseated the ram.. did every hardware check imaginable, until I found that it was my USB 2.0 PCI card. From the other posts i've read - people have had an issue with sleeping the cpu / USB 2.0 pci card.. but i've found no such ties. I've even tried 3 different USB 2.0 PCI cards to figure it out.. but still have the same problem. Sometimes it's fine.. sometimes it crashes (a full system freeze) There has otherwise been no problems with the computer since i got it a couple years back. Any Ideas?