I haven't downloaded it, but I think the reason Stevo's zip archive is that big is because it contains both the 32 & 64 bit .deb packages and the Debianized source they were built from. The source file (firefox_29.0.1~mozillabinaries.orig.tar.xz) has in it the extracted contents of both the 32bit & 64bit tarball downloads.lucky9 wrote:kmathern's script updated my installation last night. I'm fairly certain that it wasn't 230+ MB in size. So it must have downloaded only what was needed to upgrade to 29.0.1.
edit: it might also have the 32 & 64 bit .deb packages for M8.5 & M11