[Orgmode] Emacs22/23: %%(diary-anniversary) Change of behaviour?

[Memnon Anon]

Hi!

Today, I installed Emacs 23.0.91.1 to test it.
Having a look at the agenda, I missed some birthdays 
I had in my organizer.org in the suggested format:
%%(diary-anniversary 2 10 1789) Geburtstag Ghandi: %d Jahre.
                     D M  Y
I thought I made a mistake and switched month and day,
and suddenly there it was in the emacs 23 agenda.

I started emacs 22: Birthday gone. 

So, using the same setup, I get two completely 
different results.

Did I miss anything in the release notes?