Just to further document the issue I'm attaching a screenshoot with the current error observed with latest Ubuntu and Firefox
** Attachment added: "Captura de pantalla de 2013-11-14 12:21:17.png" https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/839902/+attachment/3908490/+files/Captura%20de%20pantalla%20de%202013-11-14%2012%3A21%3A17.png -- 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/839902 Title: Unable to launch Trade Architect in TD Ameritrade Status in “firefox” package in Ubuntu: Invalid Bug description: infinite loop verifying credentials ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: firefox 6.0.1+build1+nobinonly-0ubuntu0.11.04.1 ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8 Uname: Linux 2.6.38-11-generic i686 Architecture: i386 Date: Fri Sep 2 16:12:16 2011 FirefoxPackages: firefox 6.0.1+build1+nobinonly-0ubuntu0.11.04.1 flashplugin-installer N/A adobe-flashplugin 10.3.183.7-0natty1 icedtea-plugin N/A InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007) ProcEnviron: LANGUAGE=en_US:en LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: firefox UpgradeStatus: Upgraded to natty on 2011-04-30 (124 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/839902/+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