Emenu Acting Weird

I've got a problem with the emenu block,


See, in the “produits” blocks at the left of the screen, in “autres produits” there is a “magic fix” link. But this category is disabled and if you click on it, you'll get an error 404.

If you go in the “produits” thumbnail under the page header, you won't find the “magic fix” category, which is normal.

Now, these errors only occurs if you are in guest, if you log in, it will work fine.

So please, tell me where did I messed up ?

(also I've the inverted problem with two more categories which won't appear in the emenu but work fine with the thumbnail)

Sorry if I'm not really clear, english isn't my native language.