Flash Printing Doesn't Work in Firefox

Not printing in Firefox makes this a bug in whatever you are using. flash?
firrefox version 2.0 has reached EOLS a while ago

Confirmed bug exists in firefox 3 on Ubuntu 8.04 - so this must be a bug with the flash plugin? How/Where does that get reported?

Updated task and status. I'm leaving incomplete until we find out exactly what causes this.

I was having the exact same problem described in this bug while trying to print a different Flash applet display using the applet context menu. I enabled cups debug logging and kept noticing a message about cups having no default printer set (which is supposedly just informational). However, I tried setting the cups PDF printer as the default on a whim and it worked. I can now print from Flash applets where I never could before.

Specifically I edited /etc/cups/printer.conf and changed the PDF printer definition line from:
<Printer PDF>
to:
<DefaultPrinter PDF>

and then restarted cups and it worked.

I think I should have been more clear above... I couldn't print to any cups printers from the flash applet, neither actual printers nor the cups PDF printer. I was trying to print to PDF from the flash applet at the time I was looking at this issue, but after specifying a default printer in cups, printing to any printer from a flash applet now works, default or not. It doesn't seem to matter which is the default but there has to be a default printer in cups.

good catch. adding cups to get input on whether cups should always have a default printer set.

In any case, this is certainly a flash issue - which we cannot fix on our own. Can you open a bug on adobe.com and give us your ticket reference here?

It is not required that CUPS has a default printer set. One can always print if one selects a printer explicitly. A printing dialog should also work without a default printer set. It should simply select the first printer in the list in such a case. If there are no print queues at all, the dialog should show a decent message.

Just for reference, I have updated the previously opened bug at adobe with this information here:
http://bugs.adobe.com/jira/browse/FP-1853

brian the adobe bug is mentioned in https://bugs.edge.launchpad.net/ubuntu/+source/adobe-flashplugin/+bug/275691/comments/9

Same problem with Ubuntu 9.04 32 bits, Adobe Flash Player Plugin 10,0,32,18 and any browser: Firefox 3.5.2, Chromium,...

The solution #5, in my case, doesn't work.
My printers.conf (no printer.conf) file already indicates correctly the default printer:

# Printer configuration file for CUPS v1.3.9
# Written by cupsd on 2009-05-26 12:51
<DefaultPrinter HP-Color-LaserJet-2600n>
Info HP Color LaserJet 2600n
DeviceURI hp:/net/HP_Color_LaserJet_2600n?ip=192.168.1.35
State Idle
StateTime 1243334969
Accepting Yes
Shared No
JobSheets none none
QuotaPeriod 0
PageLimit 0
KLimit 0
OpPolicy default
ErrorPolicy retry-job
Option number-up 1
Option sides one-sided
Option orientation-requested 3
</Printer>

I think I found the error.
I run Firefox from the console.
When I try to print a flash fails with error (it shows in console):
"Read_file_list: cannot stat required or included file '//etc/printcap' - No such file or directory"

My printer is connected via LAN.
I have executed:

"sudo ln -s /var/run/cups/printcap /etc/printcap"

but when I execute "lpstat" show an error:

"Printer 'HP-Color-LaserJet-2600n@localhost' - cannot open connection - No existe el fichero ó directorio
Make sure the remote host supports the LPD protocol
and accepts connections from this host and from non-privileged (>1023) ports"