how can I change the site name For some reason, I'm not able to change the name of this site.  I try to change the name to 'Test Name', as shown in this screenprint:



But after I save the page, the name is repopulated with the previous title.

It is an old drupal site with many years of modules and various admins working on it, so anything's possible. It does have Pathauto installed, but I can't see any place where that is overriding the site title.  

Any thoughts?
Look in settings.php; I expect someone set $conf['site_name'] = 'Test name'.  Anything hard-coded there cannot be overridden.