Ticket cache file

[Harald Barth <haba@kth.se>]

When using telnet/rsh/ssh/whatever, the krb library appends a service
ticket to the FILE: ticket cache. Does the library serialize that with
appropriate file locking or is that the responsibility of the calling
program or user? 

Otherwise I suspect that this

for n in `seq 1 500` ; do
    rsh host$n date & >/dev/null 
done

could lead to ticket cache corruption. The suspects are running
Heimdal 0.7.2 on FC3 emt64 (if it does matter).

Harald.