AOL vs. Open Source AIM Clones

Cassivs writes: "The GAIM developers have posted an excellent document on the recent battles with AOL. It seems that upon receiving an OSCAR connection, the server requests an md5sum of some section of the aim.exe file. And recently, AOL has begun changing the section whose md5sum they request. This was always supported in the official clients, but never actually used until now, so they don't break the official clients. Quite a clever solution. Embedding aim.exe into the libfaim source has potential legal problems. Is this the end of the open-source AIM clones being able to use OSCAR?"