The Microsoft Identity Integration Server (MIIS) server crashes when you perform an incremental synchronization for Sun One Lightweight Directory Access Protocol (LDAP) in SharePoint Server 2010.
To resolve this issue, apply the following updates:
2276346 Description of the SharePoint Server 2010 hotfix package (wosrv-x-none.msp, pplwfe-x-none.msp, osrv-x-none.msp): August 31, 2010
has confirmed that this is a problem in the Microsoft products that are listed
in the "Applies to" section.