Latest Firefox 5 user agents:

User Agent Platform Device
Mozilla/5.0 (X11; FreeBSD i386; rv:5.0) Gecko/20100101 Firefox/5.0 FreeBSD Unknown
Mozilla/5.0 (PPC; rv:5.0) Gecko/2012512 Firefox/5.0 Mac Unknown
Mozilla/5.0 (PPC; rv:5.0) Gecko/201111 Firefox/5.0 Mac Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.9; rv:5.6) Gecko/20100101 Firefox/5.6.2 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.5; rv:5.7) Gecko/20100101 Firefox/5.7.9 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.3; rv:5.7) Gecko/20100101 Firefox/5.7.4 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.3; rv:5.5) Gecko/20100101 Firefox/5.5.5 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.0; rv:5.7) Gecko/20100101 Firefox/5.7.3 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.0; rv:5.5) Gecko/20100101 Firefox/5.5.0 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.0; rv:5.2) Gecko/20100101 Firefox/5.2.1 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.9; rv:5.9) Gecko/20100101 Firefox/5.9.8 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.9; rv:5.9) Gecko/20100101 Firefox/5.9.1 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.9; rv:5.8) Gecko/20100101 Firefox/5.8.5 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.9; rv:5.7) Gecko/20100101 Firefox/5.7.2 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.9; rv:5.4) Gecko/20100101 Firefox/5.4.2 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.9; rv:5.3) Gecko/20100101 Firefox/5.3.7 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.9; rv:5.0) Gecko/20100101 Firefox/5.0.4 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.8; rv:5.9) Gecko/20100101 Firefox/5.9.5 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.8; rv:5.8) Gecko/20100101 Firefox/5.8.9 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.8; rv:5.8) Gecko/20100101 Firefox/5.8.4 Mac 10 Unknown