Libelium Sagem GPRS shield

Anyone use the new Libelium GPRS unit yet? It has the Sagem unit vs. the older Telit unit installed. So far no documentation comes with the shield, the Sagem unit is well documented by the manufacturor. I noticed some changes, f.e. the serial interface in not autobaud or 9600 baud, it's a fixed 115200. Now for the problem: the Telit unit works fine, the Sagem refuses to see the SIMcard (now externally mounted). The SIM is unlocked and does not ask for a PIN (checked that in a cellphone), but still the message "simcard not present". Non simcard related AT commands work fine. Any idea's????