From the WoW forum.
http://wow.allakhazam.com/forum.html?forum=21&mid=112686929930633179
It seems that some avatars are not showing properly. Some posters user file directories seem to be locked. Others can see some avatars, but not others. For me, some avatars should be displayed, but all i see is 'AVATAR' as an image. These files seem to be broken:
http://wow.allakhazam.com/uf/quantummeteor/avatar.jpg
http://wow.allakhazam.com/uf/LvKeniko/Gasp_XL.jpg
I am also unable to look at the directory containing userfiles like this:
http://wow.allakhazam.com/uf/Hexxum/
http://wow.allakhazam.com/uf/Arkenstone/
Is this a bug? Sounds to me like the folder permissions were changed.