did you come here to seek reassurance about Apogee, or just to have a go at them?
The problem is probably more of Apple's making than Apogee's and the consensus seems to be that the firewire connection is at the heart of the matter. I just think it's important to let people know that Apogee are now saying their perfectly-mac-integrated Duets are likely to have kernal panics and crashing problems if used with a mac with more than 2BG of RAM, and that they presently recommend using Tiger rather than Leopard. There is no assurance Apple will come to the rescue, and all we know for sure is that the problem is a known one.
I wish I had known this before buying it. I would have waited to see if the problems were going to be fixed. Perhaps others would prefer to know of these confirmed problems before they invest their $500, rather than afterwards.
I also wasn't very impressed when my Duet arrived yesterday with THREE different serial numbers! Bought directly from Sweetwater, the box shows serial number DU 22079. The sticker on the back of the unit says DU 22045. Inside the box, there's a sheet of paper with peel-off barcode labels on it, with the serial number DU 22046. To say I'm unimpressed is an understatement.
ADDITION: I see from visiting the Apple Store today that their Duets contain two RCA adaptors, with an additional info sheet relating to them. These were not supplied in the Sweetwater box.