Kerberized NFSv3 incorrect behavior (revisited)

What's more,

if I obtain (as root for example) a ticket for user mamalos and kdestroy 
it, and then login as user root in a new terminal, the root user in the 
new terminal has still all privileges of mamalos in the share. Klist, of 
course, shows no tickets. This could be also a security threat, in case 
different kerberos principals (users in this setup) use a shared machine 
account to logon, and then access their resources by kiniting to their 
respective principals.

I assume that this must have to do with kernel's KGSSAPI support, which 
"forgets" to delete or renew its kerberos' cache.

Thank you all, again, for your time.

-- 
George Mamalakis

IT Officer
Electrical and Computer Engineer (Aristotle Un. of Thessaloniki),
MSc (Imperial College of London)

Department of Electrical and Computer Engineering
Faculty of Engineering
Aristotle University of Thessaloniki

phone number : +30 (2310) 994379