Ok , I have it!
I've just have my PMP exam. It was my 2nd time but now success! :-)
Today I have many (approx 10) questions regarding formulas, some delagation and many quality related.
Both time I had the same 2 buggy questions:one with LateStart < EarlyStart (???) and other had 2 identical answers.
In preparation I had PrepCast (Thak you
Cornelius!): I used it in my car mp3 player.
First time I had only Rita's book, but for the last time I've read PmBok too.
Regarding study plan: I've got one from PrepCast, but I "had to compress" it . Really was good PmPrepcast news letter and PMP materials found here. (Formulas for PMP: It saved my life! Thank you!)