[wp-xmlrpc] wp.getOptions only answers from the "main" multi-site?

[StuFF mc]

Hi,

I'm calling wp.getOptions on a WordPress MU 2.7 — I haven't tried yet
on a "recent" WP, but I'd like to support 2.7 upwards anyways.

I was suprised to see that I don't get an answer when calling this on
anything else than "blog_id = 1".

Any idea?