Just uploaded around 540 categories and in the admin area when trying to add or edit a product the page shows the error: "a script on this page is causing internet explorer to run slowly" and it takes a while to bring the edit form of the product. Is this because of the so many categories?
The admin page of the adding product. It becomes so huge the page size such as more then 10M to let client side download. You can view the page source and find out.
I've have 412 categories and when I edit a product the page size is a whopping 4.2 mb because of the gigantic viewstate. What I don't understand is why the viewstate is that big. Of course the many checkboxes requires some viewstate but over 4mb seems waaaay over the top.