After using my firewire drives problem free for about 3 or 4 weeks, I've suddenly run into the problem of them not mounting. I've ran a hardware test, zapped pram, restarted with and without the drives plugged in. No dice. I decided to check the system profiler and it said "No firewire ports were found." Did my firewire port die somehow? I didn't find a problem during the hardware test (although, I didn't run the extensive 1 hour+ scan). I'm still under warranty, so I'll probably take it to the nearest Apple store this weekend. Has anyone else had this problem, and can they offer any solutions?