Now in the release channel, Firefox 31 has a number of new additions, including, Add the search field to the new tab page, support for parental control with Prefer:Safe header, however, the one that caught my eye was block malware from downloaded files. This a great, however, there may be some other issues involved here where the browser will "phone home" to check the files being downloaded.
Here's the release notes for Firefox 31: [
mozilla.org...]
