Products not showing up in category

[super_duck]

Hey,

I have been working on this issue since last saturday and its pretty frustrating!!!!!!!!!! Some of the products are not showing up in the categories I have checked everything for ensuring the correct shopper settings are place and that the they are assigned to the relevant categories. The products in question can be found on theses two links:

http://www.muddywateronline.com/a-non-clothing

http://www.muddywateronline.com/specials

Can anybody tell me how to get the products to show up as this is really bugging me!!!! Any help would be greatly appreciated.