hss_accept_sec_context() failed: A token was invalid

[Florian Erfurth <floh-erfurth@arcor.de>]

Hi, I still have some problem with kerberized website. Apache is running on
bsdfloh (with FreeBSD 6.2). It uses heimdal. If I try to access the page
from a workstation (the user logged in into a domain). Then the User can
read following message in the webpage "Authorization Required".
If I look into /var/log/httpd-error.log the log appears:

[date][error][client 192.168.0.17] gss_accept_sec_context() failed: A token
was invalid (Unknown error: 0)

Could anyone of you tell me, what it does mean? Or how can I get more
information/debug?

cu Floh