View Full Version : [ubuntu] Firefox not working after crash

June 28th, 2009, 09:01 PM
Hi, I have ubuntu jaunty in my laptop sony vaio. Last day I was downloading something then the firefox hangs and stop working. I even restart the machine and every time I get the same error:

"Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process or restart your system."

June 28th, 2009, 09:08 PM
Try going to the Processes tab in System Monitor (System > Administration > System Monitor) and look for Firefox. If there is an entry, press "End Process". Tell us the result of that.

June 28th, 2009, 10:04 PM
Firefox optimization and troubleshooting thread (http://ubuntuforums.org/showthread.php?t=1193567)


Several Firefox problems are related to corrupted profiles and can be easily fixed by restoring a profile backup (see Backup section), by deleting the corrupted profile or deleting specific files inside the profile. Usually, there is no need to re-install Firefox.

I don't know why everyone recommends moving, renaming or deleting ~/.mozilla folder to solve Firefox issues. The ~/.mozilla folder is also the place where other Mozilla applications might store their profiles (Sunbird, etc), so deleting this folder will delete their settings too.

Firefox profiles are stored under ~/.mozilla/firefox folder. So if you need to remove a Firefox profile to fix a problem, then delete, rename or move ~/.mozilla/firefox not ~/.mozilla.

You might need to kill Firefox before deleting the profile, as explained in the previous post.

June 28th, 2009, 10:07 PM
If restarting Ubuntu and killing the running Firefox process does not work, you can create a new profile using "firefox -profilemanager"

June 28th, 2009, 10:14 PM
If restarting Ubuntu and killing running the Firefox process does not work, you can create a new profile using "firefox -profilemanager"

That work too.


firefox -P

November 9th, 2011, 11:10 PM
firefox -P worked great for me in 11.10...

November 10th, 2011, 05:12 AM
This is a very old thread. Closing it.