From time to time, I have to work on a really crappy server. They have the weirdest rules of all, they're obssed with security. I don't have a right to see logs, they randomly block my IP from time to time. I can't even call phpinfo(). Yeah, that bad!
Today I ran into a problem that made me go mad. I had a simple form with just a few fields. Locally the form was submiting via $_POST and everything was great.