I don't know if it's the worst update of WordPress, but what I do know is that it has given me more problems than the rest. Some of my plugins had to be removed. Now . . . most of the plugins available for uploading haven't been tested on the WP3.1 version. Because of the problems I've been having with the plugins I had prior to the update, I will not install another plugin that has not been tested on the new version. Didn't these plugin gurus take time to test their coding and revise it before the WP3.1 was launched? It should be a rule that before you give us a new version of WP, those plugins should be tested!!!!!!!
WordPress was my choice of applications because it was the easiest to use since all host providers do not give support for these types of applications. Now that I'm having trouble with 3.1, I'm beginning to think that WordPress is complicating things by adding additional features that most of us cannot understand.
Personally, I am not a technician. I know very little about coding and depend on simplicity to keep my websites up. We, the little people, are not knowledgeable enough to keep up with all the bells and whistles you're trying to give us. Leave all that stuff for the professional coders. Please.......!! Example, what's with bar that was added (I'll call it the edit bar)? That wasn't necessary!! KISS it, "folks!"