Reboot the zaurus (halt and on, because the reboot code from sharp is buggy), then plug the Zaurus to your computer ( dont suspend, before connecting).
Now the Zaurus should be recognized.
If it is recognized, try suspend/resume. If now the Zaurus isnt recognized again, then you have to downgrade hotplug to version from OZ 3.2.
Hope this helps,
Cheers,
Sam