how to stop automatic opening of advertisements on new tabs in firefox

You might have adware or malware installed on your computer, because pop-ups, unwanted ads and spam tabs opening up automatically may be a sign of malicious software. In order to stop automatic opening of advertisements on new tabs, I suggest you following:

• Click Start, select “Control panel” option
• Open “Uninstall a program”
• Uninstall all suspicious and unknown applications
• Reset Firefox settings
• Download AdwCleaner and scan your computer and remove any malware found

In detail all the steps that will help to remove the virus are described in the next instruction: How to stop pop-up ads.