fixed chatroom: genereate a new chunk with the same content

darcs-hash:20081205094746-b2873-e4a10258fad3f8a56a9a6227cf6e98f81a5c1e96
fixed msrp loggin for sip_im_conference.py

darcs-hash:20081205094838-b2873-e6f71b9db50797528fec7a42d5891d79c13546b9