This seems related to bug 965
If I have authenticated against active directory and have kerberos credentials I
can mount any windows server on the domain using CIFS just fine. Attempting to
connect to a netapp over CIFS gives me a failure. If I destroy my kerberos tgt
I can mount netapp by passing username and password as normal.
I'm following up with netapp on this as well, perhaps it's their bug. Windows
machines aren't afflicted though. This is killing single sign-on for the
minority platforms on campus currently.
*** This bug has been marked as a duplicate of 965 ***