Rollup 5 for Exhange Server 2007 SP1 is released.
Information about Rollup http://support.microsoft.com/?kbid=953467
Download link http://www.microsoft.com/downloads/details.aspx?FamilyId=652ED33A-11A1-459C-8FFE-90B9CBFE7903&displaylang=en
This rollup solve the problem with managed code services that may not start.
http://support.microsoft.com/kb/944752/
