As a wild guess, I think I may be seeing this problem since I may be using a different version sasl (2.1.21) than others. It could be that an older sasl may not have been checking ticket age.
I use 2.1.22. Maybe the problem is actually a bug in 2.1.21 ;)
--Quanah
-- Quanah Gibson-Mount Principal Software Developer ITS/Shared Application Services Stanford University GnuPG Public Key: http://www.stanford.edu/~quanah/pgp.html