Just to let you know that MySQL 5.1 has become GA and is now available for production use. It is a big upgrade and a lot has changed from 5.0. If you want to see everything that has changed please read “What’s new in MySQL 5.1“.
Please note that I’m currently testing 5.1 to see how the changes affect our setup, so please wait till I’m done before you upgrade. At first glance there are some major differences as my first compile attempt didn’t work. You now for instance have to indicate which storage engines you want to use during configuration to get them compiled, as this release boasts pluggable storage engines.
I will post again within a few days with all the details on how you can upgrade yourself.