Kerberos error on 3.3.4 with CTDB

[John H Terpstra]

Guys,

An IIS server that is accessing Samba CTDB is generating the following
error.  It happens at the same time every week (approx 11:08-11:15am
every Thursday) it only happens within this specific time window - wierd!

Any ideas or suggestions?  Have already recommended updating to the
latest 3.3.10.

Here is the log snippet.

Cheers,
John T.

[2010/02/04 11:13:55,  3]
smbd/sesssetup.c:reply_sesssetup_and_X_spnego(1175)
  Doing spnego session setup
[2010/02/04 11:13:55,  3]
smbd/sesssetup.c:reply_sesssetup_and_X_spnego(1210)
  NativeOS=[Windows Server 2003 R2 3790 Service Pack 2] NativeLanMan=[]
PrimaryDomain=[Windows Server 2003 R2 5.2
]
[2010/02/04 11:13:55,  3] smbd/sesssetup.c:reply_spnego_negotiate(802)
  reply_spnego_negotiate: Got secblob of size 1204
[2010/02/04 11:13:55,  3]
libads/kerberos_verify.c:ads_secrets_verify_ticket(296)
  ads_secrets_verify_ticket: enc type [23] failed to decrypt with error
Decrypt integrity check failed
[2010/02/04 11:13:55,  3] libads/kerberos_verify.c:ads_verify_ticket(471)
  ads_verify_ticket: krb5_rd_req with auth failed (Bad encryption type)
[2010/02/04 11:13:55,  1] smbd/sesssetup.c:reply_spnego_kerberos(350)
  Failed to verify incoming ticket with error NT_STATUS_LOGON_FAILURE!
[2010/02/04 11:13:55,  3] smbd/error.c:error_packet_set(61)
  error packet at smbd/sesssetup.c(352) cmd=115 (SMBsesssetupX)
NT_STATUS_LOGON_FAILURE
[2010/02/04 11:13:55,  3] smbd/process.c:smbd_process(1930)
  receive_message_or_smb failed: NT_STATUS_END_OF_FILE, exiting
[2010/02/04 11:13:55,  3] smbd/sec_ctx.c:set_sec_ctx(324)
  setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0
[2010/02/04 11:13:55,  3] smbd/connection.c:yield_connection(31)
  Yielding connection to
[2010/02/04 11:13:55,  3] smbd/server.c:exit_server_common(971)
  Server exit (normal exit)