[cups.general] only two jobs

[Brian J Spooner]

After trouble free operation for months I can print only two jobs in
succession.  All further printing requests are ignored.  After a wait of
about 30 minutes, requests are again accepted, but once more only two in
succession, then no more.  Could this be a CUPS problem or something else?
I see nothing relevant in the logs.  (I am running RHEL3 with HP4050TN
hardwired.  I would be grateful for any suggestions.
brian