If you downloaded WordPress 2.1.1 in the past 3-4 days, your WP maybe compromised! This is because some cracker manage to hack into WordPress’s server and modified some of the file in WordPress 2.1.1. Some of the files may have security exploit that added by the cracker.
It is a MUST upgrade if you installed 2.1.1. You can get the latest version of WP here.
WordPress 2.1.1 dangerous, Upgrade to 2.1.2 [Wordpress.org]
