Can you identify the update? Have you tried uninstalling it? If it is a
security-related update, I'd recommend calling Microsoft at 1-866-pcsafety
if you are in the U.S. or Canada--that may be the quickest way to get good
information. Please post back here if you can how it goes?
My machines are fully patched with all critical patches and nearly all
optional ones as well--again--what version of Windows? What version of
server are you connecting to?
My machines are a mix of xp, vista, and Windows 7, connecting to a Small
Business Server 2003 system.