I was thinking to connect to dbus directly. I can see a slight difference between the messages sent from conversation and from my application. It is only a message type identifier which is missing from the conversations dbus message. It might just be a problem with vodafone. I'll try another carrier and see if it is the same. This is quite frustrating development. qtmobility is fragile at best and I am sitting on an almost finished application.
I will try instant messages when I get the time and get back to you.
Do you know anybody who has used qml location/landmark?