[Plugin: WP e-Commerce] Category image is duplicated, no sidebar, disable "new product" by

Hello,

I have three issues I cannot resolve:
1. I am having problems on my site and on a particular page: http://lakasmuhely.hu/products-page/puhatalpu-cipok/ where the puhatalpu cipok category image is duplicated when selected. How can I get rid of this second image? (the one in the second row which has no function at all)
2. Also, on this page my fixed sidebar is not visible. If you click into one of the products it appears and also if you go on level up onto http://lakasmuhely.hu/products-page/ is is there again. Why is is missing on this level? Is this a featuer or a bug?
3. I would like to diesable “new product” in the upper black toolbar for logged in editor role users, how do I go about that?

http://wordpress.org/extend/plugins/wp-e-commerce/