since about 8am EST this morning, I've been getting exceptions and the HUD not working. Dunno if this is general or specific to me. I downloaded a fresh RC and the behavior remained.
some excerpt from exceptions.txt:
2013.02.06 08:06:25.366 collect exception (System.IndexOutOfRangeException: Index was outside the bounds of the array.
at ..()
at ..())
2013.02.06 08:06:25.393 collect exception (System.IndexOutOfRangeException: Index was outside the bounds of the array.
at ..()
at ..())