However, Microsoft has confirmed this as a problem and has provided a hotfix for it. This problem can occur for any process that uses ADSI (Active Directory Service Interfaces) to access IIS.
Now there is a temporary fix - An iisreset
Or permanent fix - Install this hotfix KB946517
The hotfix should also fix these events in the event log
- Event ID 6398
- Event ID 6482
- Event ID 7076
Relief :)