Server Busy error Windows Mobile Device Center

This seems to be a common problem but I haven't found a solution after
I googled, browsed thru ms support pages, newsgroups and forums.

4 out of 5 times I encounter this error. Windows Mobile Device Center
(WMDC) says synchronizing but it never completes and the the status
bar is 1/10th full for like 2 hours!

When I check the sync results I get 3-5 server busy error messages. No
error codes or numbers.

I either lose patience and disconnect or WMDC just cuts the connection
by itself.

This is really bugging me because I just upgraded to Vista and sync
with my device is so critical.

Please help. Thanks

PC and Device info:
PC OS: Windows Vista for Business
Device: Treo 750, Windows Mobile 5.0 (5.1.1.95 Build 14959.2.3.2)