[Mediawiki-l] Installation Script fails

[Thomas 'Hobbes' Keller]

Hi folks

I just downloaded mediawiki and was trying to install it.
However, the configure script fails with the following error message:

Fatal error: Cannot redeclare class namespace in
/hobbes/public_html/wiki/includes/Namespace.php on line 57

What's wrong? The configure-directory is fully read- and writable (even to
everyone at the moment)...

Thanks for any answers

thomas