Same problem. Simply does the USB Connect/Disconnect tones back to back.
Using same connection/config on a native XP laptop doesn't have the problem.
Running:
VMware Server 1.0.4 build-56528
Running on OpenSUSE 10.2 OR Ubuntu 7.10
XP Pro SP2 w/ ActiveSync Loaded
Motorola Q ("original" Q?)
Similar Thread on Ubuntu Forums (no solution):
http://communities.vmware.com/message/685483