What does it mean on Facebook when it says 'profile unavailable sorry this profile is not available at the moment please try again shortly'?

This could be a glitch, or it could be that someone has removed their profile and FB system hasn't updated the user profile directory yet to acknowledge the change. I had instances where both a direct link to a user profile, one with an ID number, displays this message when accessing it, and will also display the same message when using a Browse by Name link that uses a First.last formatted URL for the same user.