I've got a FW400 daisy chained to a FW800 drive that connects directly to my MBP FW800 port. This worked just fine for about 2 months and now suddenly the FW800 drive no longer shows up in finder or disk utility. I've reset the PRAM and turned off all drives for 5 mins, shut down all the drives, etc. I'm not sure what else I can do to get this drive to show back up. The only other thing that I can think of to be the problem is the controller in the ext. case - but I've tried plugging into both FW800 ports on the external drive. The kicker is that the FW400 works like a charm. Unfortunately, Apple doesn't have eSata option available and just the one FW800 port. Any ideas? Anyone seen this before?