Hello,

Try Firefox Safe Mode to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.

(If you're not using it, switch to the Default theme.)

• On Windows you can open Firefox 4.0+ in Safe Mode by holding the Shift key when you open the Firefox desktop or Start menu shortcut.
• On Mac you can open Firefox 4.0+ in Safe Mode by holding the option key while starting Firefox.
• On Linux you can open Firefox 4.0+ in Safe Mode by quitting Firefox and then going to your Terminal and running: firefox -safe-mode (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
• Or open the Help menu and click on the Restart with Add-ons Disabled... menu item while Firefox is running.

Once you get the pop-up, just select "'Start in Safe Mode"

If the issue is not present in Firefox Safe Mode, your problem is probably caused by an extension, and you need to figure out which one. Please follow the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article for that.

To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.

When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.

Thank you.

Why don't you just use MALWAREBYTES to kill this thing? If you want an easy install of it here:

http://ninite.com/malwarebytes/

Best Regards

Besides why is safe mode recommended to get rid of a virus, and i would never want to run in safemode all the time????

We need to check whether it is an add-on or if it's really a virus.

The following is the malware programs we recommend

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

• Microsoft Safety Scanner
• MalwareBytes' Anti-Malware
• TDSSKiller - AntiRootkit Utility
• 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.

You can also find further information in the Troubleshoot Firefox issues caused by malware article.

" We need to check whether it is an add-on or if it's really a virus. "

Then Why not say that to explain yourself instead of simply use a click and fix solution which seems to be the norm in these forums to get your post counts up instead of explaining why we are doing something?

I do believe i recommended Malwarebytes, there appears to be an echo in here......

Hi Carm, the reason you see a lot of similar responses is that new contributors are encouraged to use pre-approved texts for routine troubleshooting steps. Obviously as they increase their confidence they can fine-tune the content to better tailor it to the individual question and their own style.

Hi pinto1212, if you are routinely getting the "slow script" dialog with the continue or stop options, this can be caused by an interaction between a Windows update issued last year and the Flash Player plugin's protected mode feature. I had that problem last Summer: Flash hangs Firefox (eventually get script continue/stop dialog).

The following pages provide information on how to disable the protected mode feature.

• Adobe support article under the heading "Last Resort": Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?

• Manual steps: https://support.mozilla.org/questions/968190?page=5#answer-509209

• Batch file: https://support.mozilla.org/questions/982093#answer-518078

Carm I do believe i recommended Malwarebytes, there appears to be an echo in here

You did by way of a download site instead of the homepage http://www.malwarebytes.org/ which is more trustworthy.

In another thread, a user said these popups were caused by an extension with a name similar to "Plus-HD". Open the Add-ons page using either:

• Ctrl+Shift+a
• orange Firefox button (or Tools menu) > Add-ons

In the left column click Extensions. Then you can check for that one.

This may well have been part of a bundle that included something you actually wanted. You can open the Windows Control Panel to Uninstall a Program and click the "Installed on" column heading to pull your most recent installations to the top. This may reveal how it snuck in, and also offer the opportunity to more completely remove it and anything else unwanted. (Assuming the anti-malware tools didn't get it first.)