Not able to get rid of "... more info" link

[flix]

I am desperate! I have tried to get rid of the "... more info" link in the product listing for hours but it just won't work!

I have read in other postings that "the '... more info' appears because you have attributes for the product and therefore multiple prices".
But that is not true for my products. I have inserted some very simple products without any attributes which nevertheless provoke the "... more info": http://http://www.isupply.ch/index.p...index&cPath=65

I have attached my product listing settings...

Can anyone help?
(I am using v 1.3.8)