WebCT Vista and pre-auth

[John Hascall]

Has anyone else had difficulties with WebCT Vista
and pre-auth?  If a principal with +requires_preauth
attempts login it fails and we log:

Apr 18 15:38:02 kerberos-2.iastate.edu krb5kdc[9058](info): \
        preauth (timestamp) verify failure: Decrypt integrity check failed

Apr 18 15:38:02 kerberos-2.iastate.edu krb5kdc[9058](info): \
        AS_REQ (3 etypes {23 3 1}) 192.168.140.52: \
        PREAUTH_FAILED: principal at IASTATE.EDU for \
        krbtgt/IASTATE.EDU at IASTATE.EDU, Decrypt integrity check failed

(this is Kerberos 5 Version 1.4.3).

Thanks,
John