Problem with sync with SharePoint after adding another shared email to user profile

Hey Guys,
 
     We're using SharePoint 2010.  One of our users has run into a snag - he was able to sync with a SharePoint list until he added another shared email account to his outlook profile.  Now it throws SharePoint list <list name> cannot be found contact SharePoint admin error.  It works if he deselects “Use Cached Exchange Mode”, but that causes some real latency.  Anyone ever run into this?  Ideas?

Thanks

James D. Angielczyk