Comment 1 for bug 116885

There are people reporting various degrees of success (or lack thereof) - see the thread called "Feisty Fawn and Palm"

https://lists.ubuntu.com/archives/ubuntu-users/2007-May/thread.html#115056

It works for some if the "visor" kernel module is inserted manually.
It works with Jpilot and Tungsten E2 if "usb:" is used in "Serial Port" in Jpilot.

I'll keep poking around.