Kerberos in Mac OS X 10.4?

[Alex Valys]

I just upgraded to Mac OS X 10.4, and have been having problems with  
its implementation of Kerberos.

In OS 10.3, I could access my mail on MIT's POP server using  
Kerberized POP.  Now, in 10.4, whenever I try to access it, I get an  
error in the Console: "krb_sendauth() failed: error code 255".  When  
I run the Kerberos app hidden in the System directory, I see that  
while on 10.3 my tickets were listed as "v4/v5", in 10.4 I only see  
"v5".

Could this be why my email isn't working?  If so, how do I convince  
10.4's Kerberos to get v4 tickets?  If not, any idea what the problem  
actually is?  I have a support request in with Apple about this, but  
I doubt they'll get to it for a while.

Also, I'm not on this list, so if you could include me in your  
replies, I'd appreciate it.

Thanks,
Alex Valys