The issue blogged in February 2007 regarding Vista updates not synching in SBS 2003 R2 has been fixed in WSUS 3.0.
If you experienced performance issues like high cpu usage by svchost, a UI hang and long scan times, the new new WUA client included with WSUS 3.0 addresses these issues in combination with the MSI update in
. It’s important to note that the new client is only a partial solution for the svchost/msi issue and clients must have
and the new 3.0 client installed for a full solution.