To Matthew Ritenburg: I have run Debian unstable, testing, stable, Ubuntu, SuSE, FreeBSD. The software bugs I experienced in Debian unstable, causing some programs to not being able to use, I saw the same in Ubuntu. There was no fix in their distribution release. I was not surprized. You can use Debian testing for more recent but stable software. Most will work in in Debian unstable, but on a production site, I cannot recommend it, hence Ubuntu. I mean these are old debates, the one loves the one over the other. However, when it comes to production, the conservative site is always advisable. No one wants surprises or a too frequently upgrading system and just requires security updates.