Late Registration at the 2010 WSOP is a total joke as of right now.  Please read this thread that says it all, and be sure if you play even one event this year I encourage you to print, read, and understand the rules.  "That's how we do it in [insert state from the midwest]" does not apply in Vegas.  The short version is that this year you can register at 1:05pm and most times have to wait until 2:20pm to get your first hand of poker.