Comment 3 for bug 585378

Same problem here with Firefox 36 in Ubuntu 1404LTS.

I have no Page Setup option on the File menu.
Print Preview > Page setup has no Headers + Footers options.
Print > Options can change the Headers + Footers for the current print, but the settings are not retained for subsequent print operations. I think I last changed headers + footers in Firefox 30, 12.04LTS, and the settings via Print > Options were retained.

Current problem is the same in both Unity and Xfce.

Distro: Ubuntu 14.04 trusty
Kernel: 3.13.0-46-generic x86_64 (64 bit)
Desktop: Unity and Xfce
Firefox: 36.0+build2-0ubuntu0.14.04.4
locale
LANG=en_GB.UTF-8
LANGUAGE=en_GB:en
LC_CTYPE="en_GB.UTF-8"
LC_NUMERIC="en_GB.UTF-8"
LC_TIME="en_GB.UTF-8"
LC_COLLATE="en_GB.UTF-8"
LC_MONETARY="en_GB.UTF-8"
LC_MESSAGES="en_GB.UTF-8"
LC_PAPER="en_GB.UTF-8"
LC_NAME="en_GB.UTF-8"
LC_ADDRESS="en_GB.UTF-8"
LC_TELEPHONE="en_GB.UTF-8"
LC_MEASUREMENT="en_GB.UTF-8"
LC_IDENTIFICATION="en_GB.UTF-8"
LC_ALL=