at least with the linux version, it is. as of this writing the version for windows is not yet available but i would assume it will be soon… mozilla.com is even asking for help in setting the guiness book of records for the most software downloads in 24 hours.
as for the software itself, the good news is that it really uses lesser memory than version 2 and it even feels faster.
there are some small features that seems insignificant but turns out to be a time saver. one of them would be the smart bookmarks. i especially liked the fact that i can type the first few letters of the title of a page, instead of the web page address, in the address bar and the browser will search the history for it and give you suggestions. nice.
its only been a few days but i’m liking my fox even more. its definitely worth the download. 😀