Same for me: reproduced in 12.04 (with ZTE MF626 it breaks connectivity through gsm modem) and fix from comment #18 is worked for me.
usb-modeswitch version is 1.2.0+repack0-1ubuntu1 $ uname -a Linux uanote0106 3.2.0-10-generic #17-Ubuntu SMP Thu Jan 19 19:04:20 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/824147 Title: usb_modeswitch_[2193]: segfault at 8 ip 00007eff40eab681 sp 00007fff6a785f58 error 4 in libc-2.13.so[7eff40e29000+195000] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/usb-modeswitch/+bug/824147/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs