Here's another one that I got lost on. No history on villain other than they were playing really aggressively/maniacal but only over a few hands. When they call my 4bet pre, check behind then raise me all in I was thinking "WTF!?!"

So:
A) Should I have bet the flop?
B) As played was this a good fold?
C) If I do bet the flop and get jammed on, what's my action?

http://www.flopturnriver.com/Poker-Hand-QdQc-Ring-MP-1910945.php

Thanks guys. This one really bugged me. I played it over a week ago and it's still itching.