http://blogs.technet.com/b/msfss_stuff/archive/2009/12/11/issue-with-sp2-for-antigen-for-exchange.aspxWe are seeing a few calls from people that have upgraded to Antigen for Exchange SP2. These calls have AntigenService.exe hanging. This can create issues updating, connecting with the client and mail flow issues. This issue is caused when we initializeen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/msfss_stuff/archive/2009/12/11/issue-with-sp2-for-antigen-for-exchange.aspx#3389156Tue, 22 Feb 2011 15:33:28 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3389156Van Makriniotis-CSS Security<p>This is resolved in any of the hotfixes. </p> <p>I would suggest going right to rollup 2 as it does not need roll up 1 to install. </p> <p><a rel="nofollow" target="_new" href="http://support.microsoft.com/kb/980586">support.microsoft.com/.../980586</a></p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3389156" width="1" height="1">http://blogs.technet.com/b/msfss_stuff/archive/2009/12/11/issue-with-sp2-for-antigen-for-exchange.aspx#3389018Tue, 22 Feb 2011 06:50:23 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3389018Krishna Kishore<p>I having same issue, can you please confirm if we apply hot fix rollup for SP2 at <a rel="nofollow" target="_new" href="http://support.microsoft.com/kb/975355">support.microsoft.com/.../975355</a> problem gets resolved?</p> <p>I appricicate your help on this.</p> <p>Thanks</p> <p>Krishna Kishore</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3389018" width="1" height="1">