Since upgrading to Ubuntu 11.10 this issue seems to have gone away. I'll hazard a guess that the root cause was some problem in the printer configuration information that was specific to that printer and only happened to be exercised by some specific pages rendered via Firefox. Talk about ultra-specific!
I'm happy that the problem seems to have gone away, but I would have liked to get some pointers to resources for debugging printing problems. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/824914 Title: printing from Firefox 5 crashes reboots network printer Status in “firefox” package in Ubuntu: New Bug description: I have a networked Brother HL-4050CDN printer. I used to be able to print from Firefox to this printer with no problems. Recently (after I upgraded to Firefox 5?) most times when I print from Firefox to the printer the printer reboots and does not print anything. If I print to file (PS or PDF format) from and then print the file from Evince to the networked printer, that works fine. I have also noticed that if I print from Firefox to the networked printer without it rebooting there is a problem with the font - it is very coarse ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: firefox 5.0+build1+nobinonly-0ubuntu0.11.04.2 ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7 Uname: Linux 2.6.38-10-generic x86_64 NonfreeKernelModules: nvidia Architecture: amd64 Date: Fri Aug 12 11:03:20 2011 FirefoxPackages: firefox 5.0+build1+nobinonly-0ubuntu0.11.04.2 flashplugin-installer 10.3.181.34ubuntu0.11.04.1 adobe-flashplugin N/A icedtea-plugin 1.1.1-0ubuntu1~11.04.1 InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) ProcEnviron: LANGUAGE=en_AU:en LANG=en_AU.UTF-8 SHELL=/bin/bash SourcePackage: firefox UpgradeStatus: Upgraded to natty on 2011-06-08 (64 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/824914/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp