Comment 17 for bug 1164023

I did

sudo mv /usr/sbin/modem-manager /
sudo killall -9 modem-manager
sudo G_SLICE=always-malloc valgrind --log-file=valgrind.out /modem-manager --debug 2>&1 | tee modem-manager.out

While the last one was running I have (as on the last test) first clicked "Enable Mobile Broadband" in the Network Manager menu, near the bottom. After some seconds I got an OSD pop-up that I am registered for GSN or so. Now I clicked on "T-Mobile (Telekom) Default" in the "Mobile Broadband" section. The indicator applet icon of the Network Manager started spinning, telling that it is searched for a network. After some time it stopped spinning without connection established. After that, modem-manager still kept running for some hours (it did not crash this time) and so I pressed Ctrl+C. Also, I did not get a connection, as before.

Log files attached to the following comments.