Firefox will not close quite often and I have to manually kill firefox-bin.

This is probably bug 875538. You can probably work around the problem by upgrading to Firefox 7.0.1. To do that, open a Terminal window (Ctrl+Alt+T) and run this command (go to https://answers.launchpad.net/ubuntu/+source/firefox/+question/176527 if you're reading this in your email, copy the command to the clipboard, paste it into the Terminal, and press enter to run it):

sudo add-apt-repository ppa:mozillateam/firefox-stable; sudo apt-get update; sudo apt-get -y upgrade

Before pressing enter to run that command, close all Firefox windows, and terminate the firefox-bin process to ensure that Firefox is no longer running. That will likely solve your problem. If it does, please mark this question as Solved. Otherwise, please post a reply, including all the text from the Terminal (Edit > Select All; Edit > Copy; then paste the text into your post).

- - -

Before you run that command, I would encourage you to perform a diagnostic step, to determine if you are suffering from bug 875538. This may help in fixing the bug. So if you are willing to do so, then while all Firefox windows have been closed but you have not yet terminated Firefox (i.e., while you are experiencing this problem), run this command in the Terminal:

lsb_release -a; uname -a; apt-cache policy firefox; firefox -v; which -a firefox; ps ax | egrep firefox\|flash; dpkg -l | grep flash; sudo lshw -C video

You should copy that command from https://answers.launchpad.net/ubuntu/+source/firefox/+question/176527 rather than from your email.

You may be prompted for your password while that command is running. As you enter it, you won't see any placeholder characters (like *)--that's OK, just type it in and press enter.

Then select all the text from the Terminal (Edit > Select All), copy it to the clipboard (Edit > Copy), and paste it here.

I can confirm that this still occurs in Firefox 7.0.1 on Oneiric. It doesn't happen very often but is a minor annoyance.

Chris

Interesting. Can you produce the problem in Firefox 7.0.1 and then (while Firefox 7.0.1 is still running even after all its windows have been closed) run:

lsb_release -a; uname -a; apt-cache policy firefox; firefox -v; which -a firefox; ps ax | egrep firefox\|flash; dpkg -l | grep flash; sudo lshw -C video

I'm on my Lubuntu netbook at work right now, but I'll try tonight to see if I can force the error. The last time it happened was about two days ago, firefox-bin was left running after I forced Firefox to close.

Chris

I have the same problem with Firefox 10.0.2 in Ubuntu 11.10. The name of the process in my case is firefox, not firefox-bin. I get no indication of any error when exitings Firefox (X-ing), but get the message "Firefox is already running, but is not responding. To open a new window, you must first clode the Existing Firefox process, or restart your system." when I try to start Firefox again. killall firefox solves the problem.

Here is the output of the command on my computer: lsb_release -a; uname -a; apt-cache policy firefox; firefox -v; which -a firefox; ps ax | egrep firefox\|flash; dpkg -l | grep flash; sudo lshw -C video

LSB Version: core-2.0-ia32:core-2.0-noarch:core-3.0-ia32:core-3.0-noarch:core-3.1-ia32:core-3.1-noarch:core-3.2-ia32:core-3.2-noarch:core-4.0-ia32:core-4.0-noarch
Distributor ID: Ubuntu
Description: Ubuntu 11.10
Release: 11.10
Codename: oneiric
Linux janne-laptop 3.0.0-16-generic #28-Ubuntu SMP Fri Jan 27 17:50:54 UTC 2012 i686 i686 i386 GNU/Linux
firefox:
  Installerad: 10.0.2+build1-0ubuntu0.11.10.1
  Kandidat: 10.0.2+build1-0ubuntu0.11.10.1
  Versionstabell:
 *** 10.0.2+build1-0ubuntu0.11.10.1 0
        500 http://se.archive.ubuntu.com/ubuntu/ oneiric-updates/main i386 Packages
        500 http://security.ubuntu.com/ubuntu/ oneiric-security/main i386 Packages
        100 /var/lib/dpkg/status
     7.0.1+build1+nobinonly-0ubuntu2 0
        500 http://se.archive.ubuntu.com/ubuntu/ oneiric/main i386 Packages
Mozilla Firefox 10.0.2
/usr/bin/firefox
  357 ? R 0:30 /usr/lib/firefox-10.0.2/firefox
  401 pts/0 R 0:00 /usr/lib/firefox-10.0.2/firefox -v
32272 ? Sl 7:32 /usr/lib/firefox-10.0.2/firefox
32351 ? Sl 3:27 /usr/lib/firefox-10.0.2/plugin-container /usr/lib/flashplugin-installer/libflashplayer.so -greomni /usr/lib/firefox-10.0.2/omni.ja 32272 true plugin
32382 ? Sl 0:01 /usr/lib/firefox-10.0.2/plugin-container /opt/google/talkplugin/libnpgoogletalk.so -greomni /usr/lib/firefox-10.0.2/omni.ja 32272 true plugin
ii flashplugin-downloader 11.1.102.62ubuntu0.11.10.2 Adobe Flash Player plugin installer (transitional package)
ii flashplugin-installer 11.1.102.62ubuntu0.11.10.2 Adobe Flash Player plugin installer
[sudo] password for janne:
  *-display:0
       description: VGA compatible controller
       product: Mobile 4 Series Chipset Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 07
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:45 memory:f4000000-f43fffff memory:d0000000-dfffffff ioport:1800(size=8)
  *-display:1 UNCLAIMED
       description: Display controller
       product: Mobile 4 Series Chipset Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2.1
       bus info: pci@0000:00:02.1
       version: 07
       width: 64 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list
       configuration: latency=0
       resources: memory:f4400000-f44fffff