Can't log in

Hi, after some hours of sleep i suddenly can't log in to admin or customer. When i try to log in to my admin, the window just gets all white, and when i press refresh in the browser, i just get back to the username/pw page.

For customers, it works to create an account, but you can't log in.

I don't use https in any of the admin or the customer log in yet, but its just strange, because it worked for 8 hours ago.

Anyone had this problem before?

(I can add, had about the same problem earlier, but that was because the SSl was turned on, so i turned it off and then it worked great)

Anyone had this problem before?
Answer is no I have not seen this.

To be able to provide any additional assistance would require more information

Ok look here, this is what happends:

First i write in the username/pw : http://bildr.no/view/23017

After doing that, i am supposed do get in the admin console, but i really don't, this is what happends: http://bildr.no/view/23018

If I, with purpose write in the wrong username/pw, this message comes up as it usually does http://bildr.no/view/23019

I really dont under stand this, worked perfect before. I have even tried to re-install it, emptying my Mysql database and everything...

..help :unsure: