¡Hola!

You could use https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/

Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.

You can try these free programs to scan for malware, which work with your existing antivirus software:

• Microsoft Safety Scanner
• MalwareBytes' Anti-Malware
• Anti-Rootkit Utility - TDSSKiller
• AdwCleaner (for more info, see this alternate AdwCleaner download page)
• Hitman Pro
• ESET Online Scanner

Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one. Windows 8 has antivirus built-in already.

Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Did this fix your problems? Please report back to us!

If you're not sure whether ads are a normal part of a site or are being injected by a bad add-on, you could test in Firefox's Safe Mode. In Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, and some other advanced features to help you assess whether these are causing the problem.

If Firefox is not running: Hold down the Shift key when starting Firefox.

If Firefox is running: You can restart Firefox in Safe Mode using either:

• "3-bar" menu button > "?" button > Restart with Add-ons Disabled
• Help menu > Restart with Add-ons Disabled

and OK the restart.

Both scenarios: A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any improvement? (More info: Diagnose Firefox issues using Troubleshoot Mode)

Two of your plug-ins are well-known troublemakers -

MindSpark Toolbar Platform Plugin Stub for 32-bit Windows

My Web Search Plugin Stub for 32-bit Windows Google for information and third party removal advice.

Hello alan.r, I am new to Firefox so I do not know how to remove the 'Mindspark Toolbar Platform Plugin Stub for 32-bit Windows' add-on, could you tell me how?

You can find the installation path of all plugins on the about:plugins page.

• http://kb.mozillazine.org/Issues_related_to_plugins#Identifying_installed_plugins

See also "Manually uninstalling a plugin":

• https://support.mozilla.org/kb/Troubleshooting+plugins