WordPress version 2.1.1 was released late last night, and since I was already up when I got the notification about it, I upgraded the site then. (WordPress 1.0.7 has also been upgraded to version 2.0.9).

We’ve got a new bugfix and security release for both of our actively maintained branches of WordPress. Version 2.1.1 includes about 30 bug fixes, mostly minor things around encoding, XML-RPC, the object cache, and HTML code.
[...]
Version 2.0.9 only includes the security update, which was around the code we use to prevent XSS.[...]As a reminder, we’ve committed to proving security updates to 2.0 through 2010, but all new features and development are going into the newer branch, which is at this time 2.1.
[...]
This is a low-to-medium priority update recommended for all WordPress users.

View the full New Release announcement: 2.1.1 & 2.0.9 Announcement

Also, the RSS feeds weren’t working right (they were only showing the first 50 words of a post). This was due to an error I made late one night while modifying the theme. It works now, and all the feeds go through FeedBurner now. You can subscribe to the posts or comments to view in your RSS reader, and you can also have subscribe by email and have posts emailed to you. The syndication options can be found on every page.