I hit the same issue back in the 10.4 > 10.5 upgrade days, my computer's OX911 Firewire controller chip just became unstable. No official acknowledgment from Ap

I hit the same issue back in the 10.4 > 10.5 upgrade days, my computer's OX911 Firewire controller chip just became unstable. No official acknowledgment from Apple, thousands of angry Apple Discussions posts.