That's the first release following the new fast scheme of one major
release every 6 weeks..
Check out http://www.mozilla.com/en-US/firefox/5.0/releasenotes/ for
release notes. Note that it's still badly broken on sparc64, and
unlikely to be fixed soon... you still have www/firefox36.
Tested by (at least, probably forgetting some..) rpointel@, pea@,
ckuethe@ and myself on amd64, bluhm@ on i386 and ajacoutot@ on macppc
(thanks!)
ok rpointel@