After using the DreamHost Panel to upgrade my WordPress one-click install from 2.3.2 to 2.3.3, my blog somehow lost its ability to see the database. When I go to my blog home page, I get:
Sorry, but you are looking for something that isn't here.
All of the other settings, such as the blogroll and static pages, are gone. Even the name of my blog has disappeared, replaced with the generic "My Blog: Just another WordPress weblog".
In addition, all permalinks now give 404 Not Found errors. And when I try to login as an admin, I get "ERROR: Invalid username."
I checked the settings in wp-config.php, and everything looks fine. The database it points to is up, and the tables all look okay.
How do I go about debugging this problem? Does WordPress generate any log files I could look at?