After I updated Firefox 36 to 37.0.1 he uses a high percentage of CPU and it is slow and open pop-ups and advertising pages. I not install additional modules.

Today, I opened Firefox 36 and I saw that there are updated. I've updated to version 37.0.1. After the browser is restarted, I realized that it works very slowly and opens a pop-up advertising to this address:
http://offers.bycontext.com/scjs/TB/ctxjs/index.php?kw2=www.softgozar.com & mntrid = 1145 & subaff_id = 888888000000000000 & intformat = roll & nextpage = http % 3A % 2F % 2F www.softgozar.com%2FWebPage%2FSoftwareDescription.aspx%3FSoftwareId%3D21%26Title%3DMozilla-Firefox-3701-Farsi-Cyberfox-3701-x64-Waterfox-3604-x64 & ch = 6801 & sbrand = name folder = v6.5.1 & typrd = ctx & cu = 31661 & country = WW & original_country =
It's really annoying. I didn't install add-ons that are unreliable and my Firefox always updates to Mozilla.
Help, please. I really need.
Thank you.

Hello, sometimes a problem with Firefox can be a result of malware installed on your computer, you may not be aware of.

You can try these free programs to search for malicious software that work with your existing anti-virus software:

Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista/XP, if you do not already have one. Windows 8 already has integrated antivirus.

More information can be found in the article troubleshooting Firefox problems caused by malware .

In addition, delete the file User.js in your profile folder you have.

The user.js file does not exist by default. If you create the file, forget it, if you do not create the file, and then remove the User.js file, to see if the problem goes away (some programs create and write to the file also).

Thank you

Tags: Firefox

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