Just back from Exam centre. I took the Exam in Riyadh, KSA. As you know (or guess) it will be hard during hot ramadan, but the grace of god everything is great. Exam was not difficult or easy. My working experience with a large company helped a lot. Actually I am Software Engineer with Masters in IT and over 14 years experience. My prepation was about 40 Days. Each day i spent about 6 hours. And Last weekend about 15 hours on each day. I red PMBOK (i believe it is best source) and Rita (1 time) and started to take exams to understand the gap.