Regardless of what I do, the left navigation category tree is "never" updated correctly. When I move categories around, the move might be noticed by the system, but more often it's not. If I add a sub category directly through use of the "Add Category" in the tree, the "parent" field is still "ROOT". If I move products around, the move is not noticed by the category tree until several refreshes and logout/logins on the site. If I add products to a category, sometimes the product ends up with "no category mapping" and I will have to "back" my browser to set a mapping. Also, from time to time some categories do not show up in the category mapping tab of the product update screen.
No, I have NOT activated the cache. That one behaves very strange, and why would anyone need to cache the administration site? I can understand caching of the front site elements, but having cache on the admin site is of no particular use and is extremely annoying. So - usually I turn off cache when doing updates on the admin side, and turn it on again afterwards.
Is there any plan to fix these things that all seem to relate somewhat to caching?