Go to anidb.net and login. In the lower right of the window, you'll find an icon like that: -IMAGE MISSING-. Double click on it, then double click on one line that begins with "http://anidb.
info" and select "always allow cookies from this site" -> ok.
Repeat with one line that begins with "http://www.anidb.net".
:* The menu- and button-names are just rough translations.
info" is the new host of anidb, this is no advertisement-server, in case you were wondering ;)
:* After that, you have to enable "remember pass" once more before it'll work