I've managed to get kerberos authentication to work now with Apache and Likewise Open but so far, Google Chrome doesn't seem to play fair.
Unless I start it with
chrome.exe --auth-server-whitelist="*company.com" it does only pop-up a login window but will not accept any credentials at all.
As far as I know, the
--auth-server-whitelist option should only be used when trying to get Single-Sign-On (SSO) to work, but if you are fine with a log-in window it should work directly out of the box, but so far it doesn't.
This is the error I get in the apache logs.
[Tue Dec 13 08:49:04 2011] [error] [client 192.168.1.15] failed to verify krb5 credentials: Unknown code krb5 7