Many SBS 2003 R2 servers experienced an unusual interruption in the daily monitoring reports and system administrators also noted that the Update Services node in the Server Management Console failed to display correctly starting Wednesday, April 14, 2010. The Official SBS Blog has a post explaining the issue and a workaround/resolution for the problem at http://blogs.technet.com/sbs/archive/2010/04/14/windows-sbs-2003-update-services-gives-error-the-element-already-exists-in-the-collection.aspx.

If you’ve been experiencing this issue with your SBS 2003 R2 servers, follow the instructions in the SBS Blog to address the problem.