This is pretty cool. I know as a system administrator, I never wanted to run .0 anything. So 10.04 is really like 10.04.0, and means "let somebodye lse find the bugs.".
Well 10.04.1 means that the more conservative administrators can at least have a reasonable expectation that it will be even more stable than it was on release day in April.
If you're already running Ubuntu servers, btw, check this out:
Hit it and be counted as a server user. Pretty amazing how many little orange circles there are all over the world.
For those of you who've been telling me that my blog posts sound like "gleep ork boog florg", a quick primer:
Ubuntu is an operating system, like Mac OS X or Windows (except more awesomer).
10.04 was their April, 2010 release (10 == 2010 04 == april).
LTS means Long Term Support. This means that the people who maintain Ubuntu will support this release for 3 - 5 years (depending on the context.. 3 for desktops, 5 for servers).
10.04.1 is a fixed up release, mainly marking the release of updated CD images for installing. If you install 10.04 and choose automatic updates, you're already on 10.04.1 before the release.