Hi Arne,
I used the limewire specifications and I found some documents on the following web site:
Zeral .Net - Home
All theses specifications are base on the gnutella documentation found on sourceforge. I don't know if it's the last release of the documentation but I seems that's the same as the one on the limewire website (all the documents are dated from 2003).
Do you use theses documents to implement the protocol on Phex ?
Regards
Juan