Check your add-ons list to see if it's listed there and remove it.

Any chance you picked up an extension named Better Surf?

http://webapps.stackexchange.com/questions/51919/bettersurf-firefox-extension

http://webapps.stackexchange.com/questions/51966/bettersurf-extension-is-malware?lq=1

http://www.reddit.com/r/webdev/comments/1ql6tx/

I too got this crap from the recommended update.

I did not have to click anything, it was there when firefox restarted.

The removal help does not work as there is no 'remove' button. It does not show up in the extensions folder.

Norton scans files, not web pages. It is very sad  :-< but many of the software down-loaders / installers will trick you into installing not only their program, but other programs as well. You have heard of the fine print in shady contracts, right? Well, some installers you need to look at the teeny tiny fine print. You are thinking you are giving the program permission to instal the program you want by using the recommended option. But if you use the manual option instead, you discover all kinds of stuff that you do not even know what it is or what it does. From now on, everyone needs to use the manual option to put a stop to this.

Sorry, my english is so bad. J'ai réussi à m'en débarrasser en allant dans "Outils" ( you go in "Tools"), puis "modules complémentaires" (i don't know the name in English ,perhaps "Compementary tools") vous voyer le module "BetterSurf "que vous désactivez (you can see"BetterSurf" and do it enable). Possibilité aussi de supprimer le fichier dans (you can delay the files in ) Windows/Program Files (x86).

Hello, from 15 November 2013 Bettersurf has been blocked, see :

https://addons.mozilla.org/en-US/firefox/blocked/i486

thanks for the very quick response to feer56, jorgev, Tylerdowner

THANKS!!! Carolyn

I did...thanks. Carolyn

Well, it is now November 25. Bettersurf just arrived on my computer/firefox. File install dates at C:\Program Files (x86)\Better-Surf\ff are dated November 25

What's the name of the file or files that are in that folder?
Anything with the @ symbol in the file name?

If so, what's the name of that file?

So sorry, I keep a clean rubbish bin.

Under ProgramFiles (86)/bettersurf are three folders: /ff, /ch and another one (not /en). Under the /ff sub-folder were firefox installation files.

Both times bettersurf appeared, I disabled the Firefox add in, and deleted the bettersurf file tree. Restarted the computer for good measure, and no problems after that.

Bettersurf came back. This time Microsoft Security Essentials got it. However, I did look at the files: C:\Program Files (x86)\BetterSurf\BetterSurfPlus:

    \ch
         \BetterSurfPlus.crx
    \ff
         \chrome
              \content
                   \icons
                        \default
                             \star1_32.png
                        \Thumbs.db
                        \utils
                             \amiextension.js
                             \amihelper.js
                             \amilocal.js
                             \chaddon.js
                             \chback.js
                             \ffaddon.js
                             \hostutils.js
                             \ieaddon.js
              \better-surf.js
              \firefox.js
              \overlay.js
         \chrome.manifest
         \install.rdf
    \ie {empty folder}

That's all!

hello errolv, would you be able to get the contents from install.rdf & post them here?

<?xml version="1.0"?>
<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
	xmlns:em="http://www.mozilla.org/2004/em-rdf#">
	<Description about="urn:mozilla:install-manifest">
		<em:id>ext@bettersurfplus.com</em:id>
		<em:version>1.1</em:version>
		<em:type>2</em:type>
		<em:targetApplication>
			<Description>
				<em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
				<em:minVersion>2.0</em:minVersion>
				<em:maxVersion>20.*</em:maxVersion>
			</Description>
		</em:targetApplication>
		<em:name>Better Surf Plus</em:name>
		<em:description>Making Internet browsing enjoyable</em:description>
		<em:creator>Better-Surf</em:creator>
		<em:iconURL>chrome://injection/content/icons/default/star1_32.png</em:iconURL>
		<em:homepageURL></em:homepageURL>
	</Description>
</RDF>

thanks for the information!

please also try a scan with free version of malwarebytes & adwcleaner to make sure there is no other malicious software lingering on your computer that is readding this stuff...

Troubleshoot Firefox issues caused by malware