Just a quick note to those of you wanting to upgrade to WordPress 2.6. From my testing and reading there are a few issues with some popular plugins not working.
The first is the Google Analytics plugin. You will need to install the latest version, then on the Google Analytics option page you will need to click Reset all settings at the bottom, and then re-enter your UA number and select the options you require. If you use the robots meta plugin and RSS Footer plugin from the same author you will need to do a similar thing.
Secondly the Unique Blog Designs Block Ad plugin does not currently work. A fix will be available very shortly so just hang on a few days if you use this plugin and want to upgrade.
Look here for a further list of plugins that don’t work with WordPress 2.6.
Please let me know if you would like to upgrade and have any of these plugins installed.