If you are experiencing Registration problems, here is a few hints.

Make sure you use a valid e-mail adress.

Make sure the e-mail adress is not using anti-spam systems that require confirmation or any action from the sender.

If you are listed in any of the spam databases, well, you are blocked.

I receicve about 10 bounced confirmation-emails a day, because of the above.

If you are experiencing login-problems.

This is usually caused by errors in the cookies, clean them out, and it usually works.

Other causes could be:

Wrong username/password

You forgot to click the link on the confirmation-mail.

If it still doesn't work, drop me a mail