Congratulations to the CentOS team. They released CentOS 5.0 today, which is the free version of the Enterprise Linux OS. Basically they take the source for Redhat Enterprise Linux 5.0 and recompile and rebuild a solution so you can install and run it.. Free vs. $3K, easy choice if you know your way around the OS.
CentOS 4.x has been a rock solid solution for us at OWN and it runs pretty much everything from ExchangeDefender, to web, mail, dns and more servers. If you need a reliable solution this is the one you go with, not to mention 5 years of support. What do I mean by reliable?
[10:57 – 0.90] [root ns1] ~]$ uptime
10:57:41 up 161 days, 2:53, 3 users, load average: 1.63, 1.00, 0.92
(that’s 161 days of uptime, fully patched and up-to-date system that hasn’t needed a reboot in 6 months. And it ran happily ever after. Sounds like a fairly tale, doesn’t it?)