The Linux distros would have done a lot better if they were codenamed after an animal, without the stupid adjective. Lucid Lynx - crap name. Lynx - acceptable name suitable to interest PHBs.
So... Ubuntu is now 'the Linux distros'?
Those names are typical for Ubuntu and its derivatives, other distributions like Debian, Fedora and SuSE use different naming schemes.
Disclaimer: I'm a mostly satisfied Ubuntu user.