Blank page on settings save

I write this issue thinking that it can helps other people, but the problem is already solved.

I've encountered a weird bug.
On some installation if the function localizer_settings was simply declared, also with an empty body,
after saving the settings of localizer a blank page was returned.
The settings were saved.

A blank page was also returned with biblio module activated when trying to add
a new biblio node.

The problem was localizer_settings, somewhere, behind the scenes in Drupal core.

I've solved implementing a settings panel in Drupal 5 way, not using the settings hook.

CVS is updated.
Here there is the updated localizer.module file :
http://cvs.drupal.org/viewcvs/*checkout*/drupal/contributions/modules/lo...