MS07-026: Vulnerabilities in Microsoft Exchange Could Allow Remote Code Execution (931832)

After installing KB931832 complaints came in for Outlook users unable to send emails, emails queing up with public folders unmounted. we rolled back and uninstalled the patch, after that outlook users were able to send emails and queues were not piling up however public folders are still unmount and because of that public folders and free/busy calender is also making problems. we have logged a call with Microsoft and trying to resolve it since last three days but still public folders are unmount. we have recveived the patch KB934450 and applied it but still no progress. if any one of you facing same sort of issue ans is able to resolve it please do let me know.