http://blogs.technet.com/groove/archive/2007/12/12/groove-2007-sp1-available.aspxYes, Virginia, there is a Groove SP1! If you have installed  Microsoft Office Enterprise 2007 or Microsoft Office Groove 2007 the SP1 build number for Groove will show as 12.0.6215.  You must refer to Help-->About Microsoft Office Grooveen-USCommunityServer 2.1 SP1 (Build: 61025.2)