The WordPress team has released 2.0.3 of the massively popular blogging software. The primary reason is a security fix, but also includes a few performance tweaks. The install process was fairly painless thanks to the work of Mark Jaquith, using the provided patch reduced the total upgrade time to under an hour.
For the average WordPress user that doesn’t have any modified files, the install should take only a couple minutes. It’s a very simple process, if you haven’t updated, you should.
Update: More Details