Let's not forget the debacle that is the Player's Guide. They just got it 'revised' a month ago, for I4. And it still has powers mixed up (Regen - Resilience/Dull Pain), Katana has old attack names, I think a couple of the DM powers are mixed up (ToF, Taunt, Siphon Life?), incorrect description for Storm Kick in MA, Still says you can't attack if you use Elude (SR)...
I'm sure there are other problems that have been pointed out already, but it took over 1 year to come out with an incorrect manual...