No ticket cache found

[The Peach]

Hi all, I'm currently using the only linux machine on a windows (W2k3) network. I've successfully managed to setup the use of the Active Directory using samba and winbind. After 3 months I had to change my pwd and something screwed up:
I cannot print anymore (although using most of the services like browsing shared disks still works).
The error I get when trying to print is this:

E [06/Jan/2010:11:06:02 +0000] [Job 78] No ticket cache found for userid=10009
E [06/Jan/2010:11:06:02 +0000] [Job 78] Can not get the ticket cache for myuser
E [06/Jan/2010:11:06:02 +0000] [Job 78] Session setup failed: NT_STATUS_LOGON_FAILURE
E [06/Jan/2010:11:06:02 +0000] [Job 78] Tree connect failed (NT_STATUS_ACCESS_DENIED)
E [06/Jan/2010:11:06:02 +0000] [Job 78] Unable to connect to CIFS host, will retry in 60 seconds...

(given that myuser has uid=10009)
I've tried to recreate a ticket (kinit) and rejoin the network but none has worked.

The printer is a shared printer on the LAN.

Thanks for any hint you can suggest me.