Dear Emmanuel,

I compared each of the dependencies of WP-MIRROR 0.4 against recent Ubuntu releases:

Ubuntu 12.04 Precise - has most dependencies, but not MediaWiki 1.19. Ubuntu 12.10 Quantal - has all of the dependencies.

Please try (or have a friend try) to install WP-MIRROR on Ubuntu 12.10 Quantal.

Sincerely Yours, Kent