I have a heap of folders/images which I no longer need. The only option at present is to delete them one by one which takes forever as the page has to reload in between. I have left mine as no doubt a lot of people. Auctiva's server would be much better off if there was a way to quickly clean up and bulk delete!

Did you try 'manage images'? and putting a check mark next to the images you want deleted and ckicking delete?