I just looked at the code which doesn't use that data at all. Here is the quick fix.
In Web/Store/Blocks/CategoryList.ascx.cs line 73:
change
categories = <font color="#2b91af" size="2"><font color="#2b91af" size="2">Category.GetCategories(0, <font style="background-color: #ffff00">2);
to
categories = <font color="#2b91af" size="2">Category.GetCategories(0, <font style="background-color: #ffff00">1);
DotShoppingCart Staff
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