What does the notification symbol mean that is just a white box?

[AC Question]

It shows up in the notification bar but when I try to pull it down there's nothing to tap

 

[B. Diddy]

Welcome to Android Central! Which phone? It's just a solid white box? Can you show us a screenshot? http://forums.androidcentral.com/am...ide-how-post-screenshots-android-central.html. Sounds like a glitch to me.