After i installed Fedora 18 XFCE i found that it by default doesnt show the icons on the application menu.
I normally navigate it by checking the images and not reading the words, so this inconvenienced me. On checking the properties I found that “Show icons in menu” was checked but it did not seem to work.
However a solution was suggested, and after running it and logging out and in, it worked.
Run this, then restart (or maybe just logout) and it should be fixed next time you login