The init script should instead store the pid of the system qpidd and kill it alone.
Fixed at revision 643597
qpidc-0.2.656926-1.el5, qpidd-0.2.656926-1.el5, and rhm-0.2.2058-1.el5 have been pushed to the staging repo for testing
VERIFIED by checking the initscripts of both old version which reproduces the bug (qpidd-0.2-24.el5.i386.rpm) and the new one (qpidd-0.2.656926-1.el5.i386.rpm). The difference is in /etc/rc.d/init.d/qpidd in function stop(), where it is called just with "$prog" parameter in bug-positive version and with "-p ${pidfile} $prog" in the corrected one.
The same for /etc/rc.d/init.d/rhmd rhm-0.2-18.el5.i386.rpm (visible error) rhm-0.2.2060-2.el5.i386.rpm (corrected)