Comment 81 for bug 197163

I don't mean to be too off-topic, but as mentioned previously you need /etc/printcap for Mathematica to find your printers. You can generate this in hardy by adding

Printcap /etc/printcap

to your /etc/cups/cupsd.conf file, and then restarting cupsys via

sudo /etc/init.d/cupsys restart

This might be useful for those that wish to restore printing without removing the Mathematica-provided qt libraries.