The message is harmless. If you really really want to delete it, I think there is an explaination on how to do it in the FAQ. Look at http://openbsd.org/faq/faq8.html#8.1
--STeve Andre'
Hello,
I recently installed OpenBSD 2.8 to my system (i386) and found out that a warning appeared whenever I login to the system. The messages is as following. Any idea to fix it?
Warning: no Kerberos tickets issued.
Clarence