named stop not stopping

[Lisa Besko]

We had an issue with the /etc/rc.d/named script this morning where it 
looped/hung in the wait_for_pids subroutine.  We run a job to restart 
named which calls the /etc/rc.d/named script with a stop command.  For 
some reason named did not stop properly and the process continued to 
list PIDs from the wait_for_pids subroutine forever.  Has anyone ever 
encountered this before?

We are running 7.2 stable and bind 9.4.3-P3 on an AMD system.

Thanks,

LB