The latest stable WordPress 2.0.3 version is avaiable for download now. This is a bug fix an security release, and recommended to all users to download the update now. They’ve also backported a number of security enhancements from 2.1 to further enhance and protect your blog, including small performance enhancements. You can download it here.
For addition, if you don’t want to waste your time by uploading all the files, Mark has compiled “changed files only” zip, a diff (patch file) and a plain text list of the files that have changed.
More Info: WordPress 2.0.3