Logged as Admin,
Going to user->add new user, enter some information and then
clicked on user>authentication (without clicking save changes). On page authentication I get:

(on the top of the page)
Notice: Undefined index: REQUEST_URI in I:\WWW\Wewnetrzna\moodle\auth\cas\CAS\CAS.php on line 9

(in the middle of the page)
Forgotten password URLforgottenpasswordurl
Notice: Undefined property: stdClass::$forgottenpasswordurl in I:\WWW\Wewnetrzna\moodle\admin\auth.php on line 303

on the bottom of the page:
PHP Notice: Undefined index: REQUEST_URI in I:\WWW\Wewnetrzna\moodle\auth\cas\CAS\CAS.php on line 9 PHP Notice: Undefined property: stdClass::$forgottenpasswordurl in I:\WWW\Wewnetrzna\moodle\admin\auth.php on line 303