That version is now dead http://news.softpedia.com/news/ubuntu-17-04-zesty-zapus-has-reached-end-of-life-upgrade-to-ubuntu-17-10-now-519360.shtml
** Changed in: firefox (Ubuntu) Status: New => Invalid -- 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/1687359 Title: maximising or minimising an HTML5 video sporadically wedges Firefox Status in firefox package in Ubuntu: Invalid Bug description: When Firefox has been running for a few days, with tens of tabs loaded and has started to run slowly, maximising or minimising a YouTube video can wedge it. The audio keeps playing until the buffer is exhausted, but everything else is hung: no repainting of the window, no response to keyboard input. CPU usage does not fall to zero, but to around the steady state level it was at before the YouTube page was opened. ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: firefox 53.0+build6-0ubuntu0.17.04.1 ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8 Uname: Linux 4.10.0-19-generic x86_64 ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 BuildID: 20170418122848 CurrentDesktop: GNOME Date: Mon May 1 13:54:57 2017 ExecutablePath: /usr/lib/firefox/firefox InstallationDate: Installed on 2016-12-02 (149 days ago) InstallationMedia: Ubuntu-GNOME 16.10 "Yakkety Yak" - Release amd64 (20161012.1) ProcEnviron: LANGUAGE=en_AU:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_AU.UTF-8 SHELL=/bin/bash SourcePackage: firefox UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1687359/+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