Why can't I log in to the site sometimes, or after a password/email address change?

Sometimes during regular visits to the site or more certainly after changing your email in your profile you SEEM to not ot be able to log in anymore (with your new password). Usually I have the "remember password" checkbox activated, and whenever I return to DMX Zones I'am already logged in (I do not log myself out very often). Sometimes though, I have had problems with logging in to the site. The problem lies simply in the fact that the login panel won't go away! It does not produce any errors, it just seems to refresh the page and still the login fields are visible (instead of the logout, add and user profile buttons). If you deliberatley insert a wrong password the system gives you a just message that you missed - so this is functioning. Only recently I understood that, it is a messup with cookies on your machine. So delete all DMX related cookies AND clear you browser chace to log in with success!