I registered, and I was able to login and logout with no problem or errors. I used Opera, IE and Firefox to test. This may be a problem with your Firefox browser or settings.
I started to think that a few minutes ago too. that's probably the problem that I have with searching here too.
I'm going to do a clean install of firefox.
Thank YOU!
Thanks again!
it was that I made a fresh install of FIREFOX and deleted my profile and everything works good.