BrowseFox-FAD is not a part of the Firefox installation and should be removed. The same applies to the Multiplug.dll.gen.b file. For more information on these infections, please refer to these websites: *[http://easyviruskilling.com/remove-browsefox-fad-removal-instruction/ Remove BrowseFox-FAD ( Removal Instruction)] *[http://easyviruskilling.com/how-to-delete-multiplug-dll-gen-b-virus-removal-solution/ How to delete Multiplug.dll.gen.b? (virus removal solution)]

Many thanks for the reply, really helpful. Can I just get rid of these by clicking remove on McAfee or do I need to use Spy hunter as well? Thanks again

Since McAfee is able to detect the issue, you should be able to remove it by just clicking remove. I attached the websites for informational purpose, not removal instructions. If McAfee cannot remove the files, you may want to try one of these free scanners: * [http://www.microsoft.com/security/scanner/default.aspx Microsoft Safety Scanner] * [http://www.malwarebytes.org/products/malwarebytes_free/ MalwareBytes' Anti-Malware] * [http://support.kaspersky.com/viruses/disinfection/5350 Anti-Rootkit Utility - TDSSKiller] * [http://general-changelog-team.fr/en/downloads/viewdownload/20-outils-de-xplode/2-adwcleaner AdwCleaner] (for more info, see this [http://www.bleepingcomputer.com/download/adwcleaner/ alternate AdwCleaner download page]) * [http://www.surfright.nl/en/hitmanpro/ Hitman Pro] * [http://www.eset.com/us/online-scanner/ ESET Online Scanner]

I am really grateful for you taking the time to help me with this. Many thanks

No problem. Glad that I was able to provide some information to you. Thanks for contacting the Mozilla support team.