MySQL has released a new version of the Community Server 5.0.33. This is a source-only release, which means that MySQL.com will not provide binary builds. You can read all about the new/changed functionality and bugfixes in the release notes. You can download the latest source version from the MySQL.com site.
Because of the new Community release policy, there will be source only releases between the full (binary) releases. I was unable to find out what the reason for it was or when a version qualifies for a binary release.
You can download the binary install of a previous version and do the source compile/install to get a functional 5.0.33 version running with all the goodies and defaults from the binary install (like a startupitem and preference pane).