Just a heads-up, maybe it can be addressed by SL before 5.4 is 
released...  The update for OpenIPMI included with RHEL-5.4 added a new 
and unnecessary dependency on xinetd.  (It also mistakenly installs a 
file into /etc/xinetd.d/ with executable bits set.)  If you use 
OpenIPMI, and didn't have xinetd installed or running before the update 
to 5.4, well you will afterwards.  Upstream bugreport here:

https://bugzilla.redhat.com/show_bug.cgi?id=522524

-Ed