How much do you know about the Ubuntu release cycles?
First off, the version numbers are simple, year.month. Ubuntu 9.04 is scheduled for release 04/23/09. Therefor, the version becomes 9.04.
Secondly, the Ubuntu has an $adjective $animal naming scheme. The third public release is the first that began at the beginning of the alphabet. They have been moving up one letter in the alpabet since then. My personal for for 10.04 is Leaping Lynx.
In addition to these releases, they have begun creating LTS versions. These versions are supported for 3 years on desktops and 5 years on servers. This makes Ubuntu the OS with the longest support cycle. Hurray for support. On the other hand, they still maintain their 6 month release between these versions for those who wish for the latest and greatest.
This LTS version makes Ubuntu into one of the best systems you can use in a production environment. Undoubtedly, CentOS is probably a more stable server option, but it doesn’t come with the excellent community which seems to generate a more reliable system in the long run in my experience.