a problematic sim?

Hello there, I've been playing with simtrace a lot lately, works almost flawlessly :) now i got to a simcard which behaves somehow weirdly: Lukass-MacBook-Air:host lukash$ ./simtrace simtrace - GSM SIM and smartcard tracing (C) 2010 by Harald Welte <laforge(a)gnumonks.org> Entering main loop ATR APDU: 3b 16 95 d0 00 45 f7 01 00 a0 a4 00 00 02 a4 7f 20 9f 20 a0 c0 00 00 20 c0 00 00 00 00 7f 20 02 00 00 00 00 00 13 33 00 18 04 00 83 8a 83 8a 00 01 00 00 06 fd 00 00 00 00 90 00 a0 a4 00 00 02 a4 3f 00 9f 20 a0 a4 00 00 02 a4 7f 20 9f 20 a0 c0 00 00 16 c0 00 00 00 00 7f 20 02 00 00 00 00 00 13 33 00 18 04 00 83 8a 83 8a 90 00 a0 a4 00 00 02 a4 6f b7 94 04 a0 a4 00 00 02 APDU: a4 6f 05 9f 0f a0 c0 it's everytime just this, exactly the same - there's an ATR and some select APDUs mixed together, something's not right. Nothing more appears even if I'm entering the pin, then the phone successfully initializes and authenticates to the network nothing is displayed, I've spent quite some time restarting, reflasing, recompiling everything because I thought my setup was somehow incorrect, but when I left everything as it was and only changed the sim for a different one, everything works just fine. Any idea what might be causing this? I can provide some debug info, just not sure what can be helpful, I have the ftdi cable for osmocom so I can try to connect it and see what's there if needed. P.S.: software and firmware are the latest what's in the git right now, I've patched the sources with that mac os x usb init patch as I only have a mac here. thanks, lukash