no i don't use that add on.

no i don't have that addon, i did logout of the wow interface entirely then logged back in and i can now see my item level, over time when i am in raids and been playing for a while it tends to do that to the item levels and says xxx, not sure why.

problems with item level

I am having problems with seeing my item level, i have the newest version updated, and i see xxx for my item level as well as others, my friend has the same problem, here is a screen shot.    http://imgur.com/zE0mmGs