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.
The above message was played on my pc yesterday (May 31) when I clicked the icon to get on the internet, & I can no longer use Mozilla Firefox. This happened twice last year, but restarting the computer solved the problem. This time, I've restarted, rebooted, shut down, unplugged, uninstalled, reinstalled, deleted, shut off, begged, yelled...nothing works. My pc tells me that Firefox is still running, & so does any other browsers I've tried. I can get on the internet, but I like Firefox better--I can't transfer my bookmarks, etc because my current browser says Firefox is still running. How do I close it? How do I prevent it from happening again if anyone has an answer to this? HELP!!!!!