Looks like a Firefox bug
It does that. So far, Opera's the only browser I've seen that doesn't hate the favicon.ico.
IE ignores it until you add the page to favourites, and then if you clear the cache it deletes the icon. Firefox appears to 'lose' icons from time to time, or just use the wrong one. I've also seen pages where a lot of the images are swapped around or even from other sites owing to the Firefox cache getting trashed.
( ,
Thu 10 Mar 2005, 12:28,
archived)
IE ignores it until you add the page to favourites, and then if you clear the cache it deletes the icon. Firefox appears to 'lose' icons from time to time, or just use the wrong one. I've also seen pages where a lot of the images are swapped around or even from other sites owing to the Firefox cache getting trashed.