What is the most difficut thing about the MCAT?

I found it extremely pressure filled myself.  They have since changed the format (I believe) but when I took it was approximately 9 hours long (with registration).  Having a time limit for each section did not allow me to fully think through my answers.  The content wasn't really bad, it's everything I learned from college.  The questions are often logic based so it's not necessarily just memorizing a fact and spitting it back out.  The entire thing was rather uncomfortable as you are put in a room with about 100 people and it is a very serious atmosphere.  The first time I took the MCATS I had not taken physics 2 (Basically magnetism and electric fields), so I struggled with the physical sciences section.  The second time I took it I knocked the park out of the first two sections, by the time I got to the biology section, I was mentally drained.  It's really an endurance test and I recommend you take serious practice exams (for the same length) before you take the real exam.

Hey! This sounds alot like my question!
How COOL is that!!?