getting System.AccessViolationException

I hope I am posting in the right area 

after  installing HF KB2742596 (operation system :microsoft server 2003 )  , existing Application throw exception  

Exception - System.Exception: Error getting user properties from the Active Directory profile storage. ---> System.Exception: Error getting the 'title' property from the Active Directory profile storage. ---> System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at System.DirectoryServices.Interop.UnsafeNativeMethods.IAds.GetEx(String bstrName, Object& value)
   at System.DirectoryServices.PropertyValueCollection.PopulateList()
   at System.DirectoryServices.PropertyValueCollection..ctor(DirectoryEntry entry, String propertyName)
   at System.DirectoryServices.PropertyCollection.get_Item(String propertyName)