WordPress 3.1.3 login issues

I recently installed wordpress for one site but have issues with logging in. Every time I launch the /wp-admin and try to log in system does not take my password. It simply refreshes a page erasing password field and does not show any errors.

So far the only solution is to type /wp-login.php?loggedout=true in the browser and then login again. This is very annoying and I can’t see doing it every time in the future.

Please help.