The boys and girls working on WordPress have made some serious new years resolutions by pumping out these new versions every couple of weeks. 2.1 is a big step in improvements and new features which will make future development, plugins, themes and widgets a lot easier.
I’ve upgraded again and it went without a problem, well almost. I got a warning when upgrading. I usually restrict database users to what I think they need and try to keep that to a minimum. My wordpress database user was not allowed to drop tables, never thought that was going to happen. The upgrade script was unable to drop the table “wp_linkcategories” now it is no longer needed. So I have done that manually.