I think there may be an error in the version of Login which was released yesterday. When I tried to register as a new user on my site I got an internal server error and the error log comes with something like this:
[Fri May 27 19:41:33 2011] [error] [client ::1] PHP Fatal error: Cannot access empty property in [mydir]/core/components/login/model/login/login.class.php on line 65
I changed lines 65 and 66 from the class mentioned in the error from this
$this->{$$type} = new lgnValidator($this,$config);
return $this->{$$type};
to this
$this->{$type} = new lgnValidator($this,$config);
return $this->{$type};
and it seems to be working okay now.