Is this a simcard-issue or a basestation related problem? Will "bad" cards show same behaviour when roaming to a different provider's network; will "good" cards start to oscillate when roaming to this exact cell where the T-mobile cards go nuts? Or has there to be both, bad T-Mobile card PLUS bad T-mobile cell base station?
How can a GTA01 be different than GTA02, if they have same GSM firmware? http://bugzilla.openmoko.org/cgi-bin/bugzilla/show_bug.cgi?id=1024#c9 Reporters should include serial number printed on the simcard. cheers jOERG