A short while ago a new internet bot started terrorizing websites by trying to login with user accounts. This lead to users trying to log in getting a message that they exceeded their login attempts and where as a consequence asked to enter a captcha code. This of course is not only annoying for the users but also a security risk and therefore we had to take measurements to fight this nasty new bot. We therefore implemented a new login procedure that will from now on in addition to the user name and password ask you to answer a anti bot question. We are sorry that we had to take these measurements but better be save than sorry.
In addition we think it would be best if you change your login password just as a precaution.