All,

 

My co-worker, Steve Light, put together this awesome troubleshooting document on FIM CM and Smart Cards based on an issue he recently worked.  Here is the link to the wiki content.

 

FIM CM Troubleshooting: Portal sporadically fails updating smart card: http://social.technet.microsoft.com/wiki/contents/articles/13624.fim-cm-troubleshooting-portal-sporadically-fails-updating-smart-card.aspx