Hi,
a fresh new Cumulative Update for BizTalk Server 2010 was just released on 19 june 2012
You can find the Kb here : http://support.microsoft.com/kb/2689458
The latest CU for the adpater pack 2.0 (for biztalk 2009) is CU 3 available here : http://support.microsoft.com/kb/2557150/en-us
The latest CU for the adpater pack 2010 (for biztalk 2010) is CU 2 available here : http://support.microsoft.com/kb/2572999/en-us
One things strange and not very handy is that now you have to request the hotfix via Email to get the download URL… but maybe it’s because this hotfix is not fully tested by Microsoft, seeing text in my email :
WARNING This hotfix has not undergone full testing. Therefore, it is intended only for systems or computers that are experiencing the exact problem that is described in the one or more Microsoft Knowledge Base articles that are listed in “KB Article Numbers” field in the table at the end of this e-mail message. If you are not sure whether any special compatibility or installation issues are associated with this hotfix, we encourage you to wait for the next service pack release. The service pack will include a fully tested version of this fix. We understand that it can be difficult to determine whether any compatibility or installation issues are associated with a hotfix. If you want confirmation that this hotfix addresses your specific problem, or if you want to confirm whether any special compatibility or installation issues are associated with this hotfix, support professionals in Customer Support Services can help you with that.
So test it before production 
Jérémie - an other BizTalker 