Ive had problems a few times earlier in the week logging in. It appeared they were having technical problems. I dont seem to be having any trouble at the moment.
I have had the same issues recently. Oddly enough it doesnt matter what computer I am on at the time. Could be cookies but I suspect glitches on occassion.
I don't think this is from Cookies, because sometimes I can login and sometimes I can't. For example, I have just successfully logged into my account, but it did not work few minutes ago.