http://blogs.msdn.com/clemensv/archive/2008/07/15/biztalk-services-r11-r12-upgrade-in-progress.aspxThe BizTalk Services CTP will be switched from the "R11" to the "R12" release starting in about 30 minutes and we expect to have a 2 hour time window (1400h-1600h PT/2300h-0100h UTC) where existing service accounts are being rolled over to the new release.enCommunityServer 2.1 SP1 (Build: 61025.2)