You need to disable the Skype extension. Click the Disable button if you can't uninstall (Remove) it.

See:

• Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

That did it.

Thanks for the prompt response.

When you are logged in, please click the Helpful button next to the answer that solved your Firefox support issue, so this thread gets marked as Solved.

Need to uninstall not just disable. It's not in the extensions folder of profile either?

Solution courtesy of 'silkphoenix" on another post:

Windows Control Panel- Programs & Features (add/remove programs)-Skype Toolbars-uninstall... did it for me!!

read this: http://support.mozilla.com/en-US/questions/805438?s=%22Skype%22+%22extension%22+%22uninstall%22&as=s

oops.. that link goes to this page... try this one!

https://support.mozilla.com/en-US/questions/820926?new=1

I thought I did mark the solution that helped, as you said?

If you got here because you searched for "remove skype button firefox" or some such thing and you don't want to remove the extension (just hide the gaudy button)... um... here's the official company line on that:

http://forum.skype.com/index.php?showtopic=633873

Skype says it will "take some time to implement" a toolbar button that can be removed. Like every other extension in existence that creates a toolbar button. I think they found a way to keep you from removing it, if you want to know the truth.

I didn't believe it for one second, so I started with these instructions for removing the orange Firefox button and added:

#skype_extension_v5_toolbar_button { display:none; }

to my "userChrome.css" instead of the stuff for the Firefox button. Restart Firefox and be gone, hideous and useless Skype button!

If you need to change the Skype extension's settings (which you should only need to set once, maybe unless you move/travel to a different country), you'll need to reverse the change or comment out that line in userChrome.css /* like this */, then restart Firefox again.

If you're really clever, you might be able to somehow make a user style and use Stylish to turn it on and off at will.