In MediaWiki 1.9.0 one sees
Installation successful! Move the config/LocalSettings.php file into the parent directory, then follow this link to your wiki.
OK, but don't you want to remind them _here_ (too again perhpaps) to
change the permissions? Else it will be left
-rw-rw-rw- 1 www-data www-data 4238 2007-01-25 07:32 LocalSettings.php
forever, warnings in other paragraphs notwithstanding. At least on UNIX.
I see, you Windows guys didn't expect that :-)