Oracle Solaris 11.1 can't join Win 2003 AD domain

Hi all.

I've had a read of this thread:

https://communities.oracle.com/portal/server.pt/community/view_discussion_topic/216?threadid=325064&Portlet=Search Results&PrevPage=Communities-Search#311930

And it looked helpful, so I followed all these steps. but no joy. I'm trying to bind a Solaris 11.1 test box to a Windows 2003 server AD DC cluster. I've done everything the Oracle documents suggest, everything suggests above, and still, no success. 

I get a slightly different error message to others, when trying to set up the kerberos trust/bind for krb5:

zebra@solaris11adtest:~$ sudo kclient -a adAdminUsername -T ms_ad