The FreeBSD operating system is finally through it's buggy 5.x series and into the more reliable 6.x series. Most of the problems of the old days -- kernel panics on multi-CPU machines, AMD64 troubles galore, and shaky network drivers -- are gone. FreeBSD still isn't perfect, but at least with 6.0-RELEASE it's more stable and functional than it has been in the recent past.
If you've never used FreeBSD before, this section's for you. If you're already familiar with FreeBSD, you'll probably want to skip down to the next section to find out what's new.