Well my question is, the fact that one can find instructor's solution manuals in the net, does'nt it mean that there are over there some corrupted instructors? I mean there's a point where you can't ask anymore new questions, doesn't it? Unless I am mistaken and you can ask indefinitely questions on the subjects which are being tested. Obviously every student would prefer knowing the answer, but if the student wants one day to become a researcher he should know when to be independent and find solutions to problems without solution manual. I must confess that I use these manuals, but I ensure that I understand the solution and not blindly copying like a parrot.