Recent answers to can't close a firefox tabhttps://support.mozilla.org/en-US/questions/9452272012-12-26T13:42:56-08:00You can see your User Agent displayed on this page.
http://useragentstring.com/
2012-12-26T13:42:56-08:00the-edmeisterhttps://support.mozilla.org/en-US/questions/945227#answer-392168<p>You can see your User Agent displayed on this page. <br>
<a href="http://useragentstring.com/" rel="nofollow">http://useragentstring.com/</a>
</p>I have followed your suggestions. How will I know if it's fixed. I was getting messages that i had a2012-12-26T12:35:23-08:00maxy0007https://support.mozilla.org/en-US/questions/945227#answer-392160<p>I have followed your suggestions. How will I know if it's fixed. I was getting messages that i had an old version of firefox so hopefully this fixed it&nbsp;:)
</p>You have a corrupted user agent that identifies you as Firefox/3.6.16
Mozilla/5.0 (Windows; U; Wind2012-12-25T03:41:53-08:00cor-elhttps://support.mozilla.org/en-US/questions/945227#answer-391826<p>You have a corrupted user agent that identifies you as Firefox/3.6.16
</p>
<ul><li>Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2.16) Gecko/20110319 Firefox/3.6.16 ( .NET CLR 3.5.30729; .NET4.0C) FBSMTWB
</li></ul>
<p>See:
</p>
<ul><li><a href="https://support.mozilla.org/kb/Finding+your+Firefox+version" rel="nofollow">https://support.mozilla.org/kb/Finding+your+Firefox+version</a>
</li><li><a href="https://support.mozilla.org/kb/websites-say-firefox-outdated-or-incompatible" rel="nofollow">https://support.mozilla.org/kb/websites-say-firefox-outdated-or-incompatible</a>
</li></ul>
<ul><li><a href="http://kb.mozillazine.org/Resetting_your_useragent_string_to_its_compiled-in_default" rel="nofollow">http://kb.mozillazine.org/Resetting_your_useragent_string_to_its_compiled-in_default</a>
</li></ul>Thank you, Thank you, Thank you!!
The offending extension was Imagetweak 0.25.1
The extra tab is gon2012-12-24T21:35:25-08:00maxy0007https://support.mozilla.org/en-US/questions/945227#answer-391771<p>Thank you, Thank you, Thank you!!
The offending extension was Imagetweak 0.25.1
</p><p>The extra tab is gone.
</p><p>Thanks again for your speedy response
</p><p>Maxy&nbsp;:)
</p>Are you using Addthis Extension(Add-on)
update your firefox to latest version.
2012-12-24T15:36:04-08:00iamjayakumarshttps://support.mozilla.org/en-US/questions/945227#answer-391739<p>Are you using Addthis Extension(Add-on)
</p><p><strong> update your firefox to latest version. </strong>
</p>Try the Firefox Safe Mode to see how it works there. The Safe Mode is a troubleshooting mode, which 2012-12-24T15:34:56-08:00iamjayakumarshttps://support.mozilla.org/en-US/questions/945227#answer-391738<p><strong>Try the Firefox Safe Mode</strong> to see how it works there. The Safe Mode is a troubleshooting mode, which disables most add-ons.<em>
</em>
</p><p><em>(If you're not using it, switch to the Default theme.)</em>
</p>
<ul><li> You can open the Firefox 4.0+ Safe Mode by holding the <strong>Shift</strong> key when you use the Firefox desktop or Start menu shortcut.
</li><li> Or use the Help menu item and click on the <strong>Restart with Add-ons Disabled...</strong> menu item while Firefox is running.
</li></ul>
<p><em>Don't select anything right now, just use "'Start in Safe Mode"</em>
<em>To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before using the Firefox shortcut (without the Shift key) to open it again.</em>
<em><strong>If it is good in the Firefox Safe Mode</strong></em>, your problem is probably caused by an extension, and you need to figure out which one.
</p><p>Please follow the <a href="/en-US/kb/troubleshoot-extensions-themes-to-fix-problems" rel="nofollow">Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems</a> article for that.
</p><p><em>When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.</em>
</p>