A lot of people, myself included were experiencing login problems. This happened ages ago, and I haven't had time to investigate it until now. It was caused by an upgrade to PHP on this server and because I don't login here that often I didn't notice it at the time and make an immediate link between the two events. Anyway, I've just investigated it and I think it is now fixed. It is working for me anyway, let me know if it still isn't working for you. Cheers.