k3b 0.11.7

kernel 2.6.3.7 Mandrake 10 official

I've poke and poked around in k3b, and this is driving me nuts. When i go to burn an iso it always automatically loads a previos iso i burned, how can i tell k3b not to keep loading this previos iso when i select burn cd from iso?

Also it shows file previes, ie, image icon and then hte image, text document icon and then the text, and this wouldnt be bad, except that its constantly refreshing this so much that it just flickers non-stop between preview and the icon.

Thanks for any help