Page not found errors in Requester pages

Anyone out there experiencing a number of "Page not found" errors when navigating around the Requester interface? Tried to edit a task and save changes - page not found. Also tried to start a new batch and ran into the same issue. Any advice for expediting contact with technical support? I've already submitted an inquiry via the "Contact Us" page and checked out the forums (couldn't post for some reason, though).