"Or if I am adding something say Images to my listing it makes me sign in again."
Me too. Anytime I leave Auctiva, I am signed out, even if I come back within a few minutes. Occasionally, while I'm in the middle of producing an auction with Auctiva and I go to select a category, when the new window opens, I am required to sign into that window too, even though I am still signed in to the main listing page! What a pain