So here is a weird issue. I recently noticed that after upgrading all sites to 3.0.4 that there is still one sub site that is not upgrading and is till using WPMU 2.9.2.
Not only that, but somehow it seems to be using an older database. For example; my main site has updated all plugins. I have even REMOVED some sites that we were not using. However when I go to this site that isn't being upgraded, there are all the OLD plugins and the OLD sites are still there as if nothing happened.
How is this possible?