cannot sync PalmOS Treo PDA

While running "strace jpilot", the sync process started, it synced a few things, but Jpilot after that does not close the sync, it seems to wait for something to happen.
If I run Jpilot without strace, it does not work at all.

Correction: Jpilot does work without strace. It doesn't work when launched from the Gnome menu.

Jpilot works when launched from gnome-terminal.
Jpilot does not work when clicked on the menu icon.

Additionally, it froze at the end of sync because the Expense plugin was selected by default. I unselected Expense (because I don't have that application) and Keyring (because I don't want to use that plugin) and now Jpilot seems to work, at least when I launch it manually from the terminal.

Now it doesn't work anymore, even from the terminal, and there's a jpilot process eating up CPU.

I added the output of strace with jpilot when I click Backup but jpilot does nothing.

added jpilot as the package affected

In JPilot, File / Preferences / Settings, use "usb:" for Serial Port. It should just work, no patching of /etc/udev files, no forced "modprobe visor" required.

Perhaps this should be made the default? The majority of PalmOS PDAs nowadays are on USB anyway, so it makes sense to have JPilot use "usb:" as a default setting. It's kind of confusing otherwise.