No version of Firefox whether for Windows, Mac OSX or Linux from mozilla.org/firefox/all comes with this or any other such junk.

Firefox is becoming one of the increasingly fewer applications that does not gte bundled with anything.

Just because you see it in Firefox does not automatically mean it came with a Firefox install or update from Mozilla.org

http://malwaretips.com/blogs/remove-vosteran-search/ http://malwaretips.com/blogs/remove-pup-optional-vosteran-virus/ http://www.lavasoft.com/mylavasoft/company/blog/how-to-remove-vosteran

Sites like download .com aka cnet for example is a known adware site that uses its own installer to bundle stuff with otherwise clean software for example.

Thank you, I stand corrected, Adware cleaner found Vosteran in my computer, I had never seen it before. And, only saw it when I downloaded Firefox. So I assume other people have it in their computers and don't know it till they get Firefox. By the way, in the 1st Link you sent me, this link, ADWCLEANER DOWNLOAD LINK within the Link does not work, it says error 404. So I used the 2nd Link.