[There's a reason that Yoda is the unofficial mascot of SBS.  Size indeed matters not.] Task scheduler failed to start “\User_Feed_Synchronization - THE OFFICIAL BLOG OF THE SBS DIVA
Wed, Jul 21 2010 12:59 bradley

Task scheduler failed to start “\User_Feed_Synchronization

Added to the "my brain is getting old and I can't remember all this stuff" document  is the tip from Yves Gourle about fixing an alert you might see for

Task scheduler failed to start “\User_Feed_Synchronization-{guid}” task for user “<DOMAIN>\user”

Small Business Server 2008 - Build document - TechNet Articles - Home - TechNet Wiki:
http://social.technet.microsoft.com/wiki/contents/articles/small-business-server-2008-build-document.aspx

TWEAKS FOR REMOVING RSS FEED SYNC

Since a server is probably not syncing RSS feeds, there's a task that runs in the background that is not needed on the server.  In some cases you may see an alert in the event logs that indicate that the rss sync has not completed.  While it can be ignored, you can also adjust the rss feed sync to not occur.   This tip is courtesy of Yves Gourle:

You can disable the automatic feed sync as follows:

  • Run the following command (with a command prompt started with elevated rights) : msfeedssync disable
  • Or in IE options go to content  -feeds and web slices,  click on settings  and uncheck “automatically check for feeds”
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# re: Task scheduler failed to start “\User_Feed_Synchronization

Thursday, July 22, 2010 1:52 AM by Paul Crosbie

This had been bugging me for over a year.  Only found a solution a week ago.  Did the first one and it works.