Last night the WordPress team announced a critical security issue that came about in WordPress 2.1.1 after a hacker gained access to the servers and edited a couple files allowing a possible remote php execution. Supposedly, the code was only found in 2.1.1 downloads from the past few days, but WordPress recommended that everyone upgrades to 2.1.2. If you haven’t done so already, I highly recommend it. While we’re on the subject of hackers, I suggest you have a look at this post on using the htaccess to hide your wordpress admin folder if you’re worried about potential security issues.