http://blog.flaphead.dns2go.com/archive/2008/02/29/description-of-update-rollup-1-for-microsoft-exchange-server-2007-service-pack-1.aspxWHAT! just found this and in the nick of time Source: http://support.microsoft.com/?kbid=945684 Microsoft has released Update Rollup 1 for Microsoft Exchange Server 2007 Service Pack 1 (SP1). Check the KB for the list of fixes ... and there is a LOT!enCommunityServer 2.1 SP2 (Build: 61129.2)