browser    | version  |        os         
--------------+----------+-------------------
 Firefox      | 1.5.0.12 | Fedora Linux
 Firefox      | 2.0.0.11 | Mandrake Linux
 Firefox      | 2.0.0.16 | Fedora Linux
 Firefox      | 2.0.0.19 | Fedora Linux
 Firefox      | 2.0.0.22 | Ubuntu Linux
 Firefox      | 3.0      | Linux
 Firefox      | 3.0.10   | Gentoo Linux
 Firefox      | 3.0.10   | Mandrake Linux
 Firefox      | 3.0.10   | Ubuntu Linux
 Firefox      | 3.0.11   | Mandrake Linux
 Firefox      | 3.0.11   | Ubuntu Linux
 Firefox      | 3.0.12   | Ubuntu Linux
 Firefox      | 3.0.5    | Linux
 Firefox      | 3.0.6    | Fedora Linux
 Firefox      | 3.0.6    | Linux
 Firefox      | 3.0.6    | Ubuntu Linux
 Firefox      | 3.0.7    | Ubuntu Linux
 Firefox      | 3.0.8    | Ubuntu Linux
 Firefox      | 3.0.9    | Linux
 Firefox      | 3.0.9    | Ubuntu Linux
 Firefox      | 3.1b3    | Linux
 Firefox      | 3.5b4    | Fedora Core Linux
 Firefox      | 3.5b4    | Fedora Linux
 GranParadiso | 3.0.10   | Linux
 Iceweasel    | 3.0.6    | Debian Linux
 Konqueror    | 3.5      | Kubuntu Linux
 Opera        | 9.63     | Linux
 Shiretoko    | 3.5b5pre | Linux
(28 rows)