USB Zoom H2 Audio Recorder No Longer Mounts in Leopard

First of all, this device doesn't have any drivers - it's just a simple USB mass storage device and it used to mount without issue in Tiger. However, on BOTH of the machines I've upgrade to Leopard, it no longer works at all. Tried multiple cables. Doesn't even show up in Disk Utility (although it DOES say it is connected in System Profiler and USB prober). Tried pram reset, PMU reset, various macfixit crap suggested for the 10.4.10 USB-breaking update. No dice. Anyone having similar issues, or maybe have a work arround?