Comment 5 for bug 30146

Confirmed by me too. I have the menu located on the bottom of the screen and I'm using cutting-edge version of Dapper system.

As far as I can observe, this happens only the first time you open the menu. Next time all the items are rendered correctly. Seguso's guessing might be right and I would like fixing it by icons preloading, since it would also eliminate another gnome-panel bug (#44002).