Just went to edit my categories and noticed they were gone. Not sure what I have done when as I have been editing the css for boxes, and menu and changed some images etc in the media folders… but I dont see how any of this would lose me my categories.
They are all still live on the front end its just theyre not in the admin section.
i had the problem 2 times. i resolved it by editing one product at the category section. in product edit under the category tab all categories displayed properly. after assigning the product to another category and save the product, all categories where shown right in the categories management section again.
when it happen again i will post a screenshot. thank you for your reply.
sorry for my bad english.
i think i have found where the problem is. i have the firefox plugin firebug and yslow installed. after suspending it, i cannot reproduce this anymore. and when i resume the firebug with yslow, sometimes it happens again…