When I click the plus sign to open a tab, TWO open!
Okay, I have NOT changed my options or settings. But since an update a few weeks ago, when I click on the plus sign to open A new tab, TWO open up. any google search help only relates to old options tabs, etc.. thanks
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The problem could be the double-click speed of your mouse. If you're running Windows, you can change this setting in the Control Panel.
If you're noticing double-click behavior when you only single-click in other applications as well, you may need to replace your mouse. I bought the mouse that I am currently using to replace one I had that was causing this same problem.
Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.
- Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
- Do NOT click the Reset button on the Safe Mode start window
- https://support.mozilla.org/kb/Safe+Mode
- https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
There are other things that need attention.
Your System Details List shows multiple Flash plugins.
- Shockwave Flash 15.0 r0
- Shockwave Flash 16.0 r0
- Shockwave Flash 17.0 r0
You can find the installation path of all plugins on the about:plugins page.
You can check the Flash player installation folder for multiple Flash player plugins and remove older version(s) of the plugin (NPSWF32) and possibly (re)install the latest Flash player.
- (32 bit Windows) C:\Windows\System32\Macromed\Flash\
- (64 bit Windows) C:\Windows\SysWOW64\Macromed\Flash\