lprm-0.48 only allows non-root users to remove jobs from the same host from
which the print job was submitted. However, the testing is really screwed
up and when it fails, lprm stops working...

As I understand it, lpr records the hostname of the machine where the jobs
is submitted and compares it to the reverse-DNS of the IP submitting the
lprm command _lowercased_. Result:

1) Hostname = rev-DNS, but includes upper-case letters -> check fails, lprm
does not work.
2) Hostname != rev-DNS -> check fails, lprm does not work.

While (2) is understandable for security reasons, (1) is really annoying
(especially after I've spent _lots_ of time trying to figure the whole
thing out).

P.S. I tried it only with RH-5.2 runnin on both client and daemon, but I
expect result to be the same on all other versions of RH, on which the
lpr-0.48 update was installed.