I created a menu, saved it, and added items to it. When I hover over an item, the pointer turns into a four-direction arrow, but I cannot drag the item.
In Firefox, the four-direction arrow just slides off the item without dragging it. In Chrome, when I click, the four-direction arrow turns into an I beam and starts to select text and other items as I drag. (Please don't ask me to try IE :)
My Page/category/Link Order plugins work just fine.