CentOS - Jul 2011 - shared cups printers disappeared

I have two computers, one with a HP printer on it and one with a Samsung
printer on it.

Both systems have their respective pritnters listed under
system-config-printer and have  "enabled" "accepting jobs"
and "shared" checked.

Up to a few days ago this worked fine.  Suddenly I can't see either printer
from the other machine and as far as I know nothing has changed other than the
usual "yum update" stuff that has come in over the past few days. I
can see the
local printer on each computer but system-config-printer (and applications)
can't see the remote printer at all.

It's odd that the remote printer has disappeared from both computers at the
same time.  Each computer can see its own local printer but it can't see the
remote printer on the other computer.

The firewall has port 631 tcp and udp both allowed on both computers.  The cups
version on both computers is cups-1.3.7-26.el5_6.1 which doesn't appear to
have
been updated since April.



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MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com
www.creekfm.com - FIFTY THOUSAND WATTS of POW WOW POWER!

Creating a new printer with system-config-printer seems to work.  "new
printer" "IPP", "generic postscript driver".  Print
test page.  Test page
printed.

So it's just the automatic find-the--remote-printer function that's not
working.

I have avahi-daemon disabled on both of these computers?   Is that the
problem?  I re-enabled it on both computers and it didn't seem to change
anything; it still didn't see the remote printers.

-- 
MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com
www.creekfm.com - FIFTY THOUSAND WATTS of POW WOW POWER!