Any searches based on Music categories are failing with an error, and if you try and refine the Search window it fails, so it looks like ebay have managed to screw something else up. Music categories are clearly broken, you can tell because viewing any item listed in any Music sub-category e.g. Music>Records, you can't click on the Category link, it's just dead text, unlike items listed in other unaffected categories e.g. Mobile Phones