I’ve been having weird problems with the WordPress admin console. I didn’t get they nifty little icon bar for TinyMCE when composing a post. When I bulk moderated comments, only the first change would actually be applied (the other changes remained in the moderation queue). Things just didn’t always work the way I expected them to (or the way they used to).
I thought maybe an upgrade to the latest version of WordPress might fix things up, so I upgraded to WordPress 2.3. The process went quickly and smoothly, but the problems persisted. It turned out all of the problems were related to the Squid proxy I was using. Eliminate the proxy and all the symptoms disappeared.
Since there are times when I have no choice but to use the Squid proxy, this doesn’t entirely solve the problem, but at least now I know where to look (and how to get around it when I need to post here).