When I use a GSI external antenna for WiFi I first get a message that "Firefox is already running but not responding etc", and then Firefox crashes. Can anyone help please?

Because of weak WiFi signal I need to use an external antenna (GSI USB wireless WIFI long range network adapter). My computer can see the signal clearly and shows that I am connected to the right network. But when I try to launch Firefox I get a message that "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." When I click "OK" Firefox tries to load websites but gives up and reports "Problem Loading". It looks like Firefox is having trouble "seeing" the signal from the external antenna. What do I need to do please?

Try Ubuntu support, I don't think your problem is with Firefox - it will use the connection that the Operating System "makes". I'm a real noob with Ubuntu myself, and don't think I can help you figure out the problem.
http://ubuntuforums.org/

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How are you opening the Profile Manager?
*http://kb.mozillazine.org/Profile_Manager
Sounds that Firefox is still or already running. 
See:
*http://kb.mozillazine.org/Kill_application

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The details are in the question. Don't know what else to add.

https://support.mozilla.com/en-US/kb/Firefox%20hangs (See '''hang-at-exit''')

Firefox is already running but not responding,No process in task manager,Restart and uninstall not useful.Profile manager error

So one day when I opened my mozilla firefox Ive got the "Firefox is already running but not responding.To open a new window,you must first close the existing firefox process,or restart your system."
So I checked my task manager but there is no process,I then checked hours in the internet to find a solution.Yes,I also checked for solutions in this site.Then,I try uninstalling and restarting,it also didn't work,Next I also tried downloading profilemanager and tried to run it but as unlucky as I can be,it also didn't work. Please help :(

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.
Note: ''This will cause you to lose any Extensions, Open websites, and some Preferences.''
To Reset Firefox do the following:
#Go to Firefox > Help > Troubleshooting Information.
#Click the "Reset Firefox" button.
#Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
#Firefox will open with all factory defaults applied.
Further information can be found in the [[Reset Firefox – easily fix most problems]] article.
Did this fix your problems? Please report back to us!

On switching on, a message says 'Firefox is already running but not responding...........' then tells me to close it and restart but how can I close it when the page isn't yet displayed?

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See also [[Firefox is already running but is not responding]]

When I open Firefox I get the message "Firefox is already running but not responding . . .

I am using Firefox 3.6.9 with Windows XP SP3. Almost every time I try to open Firefox I get the message:
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I then must open Task Manager and find Firefox and stop the process.
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I have installed Google Chrome to fix this problem but now I find that several of the websites and companies I do business with are not compatible with Chrome.
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For possible causes see [[Firefox is already running but is not responding]].

I have the problem described in /forums/knowledge-base-articles/704725. (Firefox is already running but not responding). My only solution is to use Task Manager to end the firerfox process. I am the only user and there are no other profiles on my system

Occasionally I have the problem discussed in /forums/knowledge-base-articles/704725 , Firefox is already running. My only fix is to use Task Manager to end the firefox process. At such tmes, I have no other instances running.

'''https://support.mozilla.org/questions/997866?esab=a&s=&r=1&as=s'''. 
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I get this problem often, on my computer which runs XP, I find simply waiting a few moments (up to a minute) is enough to end the process.
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Every time I have to re-start my computer I need to stop my work. It would sure be nice if you can tell me how to keep this from occurring.
Thank you.

Sounds like Firefox isn't closing down completely when you exit it. 
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'''Kill Application'''
In Task Manager, does firefox.exe show in the '''Processes''' tab?
See: '''[http://kb.mozillazine.org/Kill_application Kill Application]'''
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'''[[Firefox hangs]]'''
'''[http://kb.mozillazine.org/Firefox_hangs#Hang_at_exit Firefox hangs at exit (Mozillazine article)]'''
'''[[Firefox is already running but is not responding]]'''
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'''[[Troubleshooting plugins]]'''
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There's always a way to reset the device jmn33! Thanks for keeping us in the loop. To process a full reset/restore on the device please visit http://vz.to/12TLCsR. Please keep us posted once this is completed, thanks!
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Follow us on Twitter @VZWSUPPORT

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When I use a GSI external antenna for WiFi I first get a message that "Firefox is already running but not responding etc", and then Firefox crashes. Can anyone help please?

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