Since using Version 7.508 we can't import requesters from the AD. Having a Windows 2003 Domaincontroller (it was working before the update).
Now- if we start the import manually it looks like it is working but there's no end in sight (for hours - until you cancel that operations). If we try to fetch the OUs from Active Directoy again, we get the message "Exception occured while enumerating Oraganizational Units". It doesn't change anything with a different user or domaincontroller.