In production server I can't login to my website. I know that it is some bug of Django with MD5 crypt or something like that, but unfortunately I don't remember what I should do. I am searching the answer since half day, but I can't find this website where was explained this problem.
DO you know how I can do sessions working.
In answer to this bit the comments
Sorry, but problems is otherwise. I am using subdomains like pl.domain and uk.domain and domain. User is only logged in one subdomain, but I want make it logged in all website. Is it possible? – Thomas
you need to allow cross-domain sessions that don't just refer to a subdomain. By default, Django will give you different sessions for bar.example.com and foo.example.com.
In your settings.py set SESSION_COOKIE_DOMAIN to .domain.tld (don't forget the leading dot!) and you'll be sorted.