Comment 14 for bug 124336

It looks as if the fault is in libgtk+2.0. I'm continuing to track it. Currently building debug versions of the grtk+2.0 libraries. It is called from:

src/wireless-security-option.c::wso_wpa_create_phase2_type_model()

 model = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT);
 printf("wso_wpa_create_phase2_type_model() model=%lX\n", model);

$ nm-applet
wso_wpa_create_phase2_type_model() model=C6E590
About to call GTK_IS_TREE_MODEL(C6E590)
GTK_IS_TREE_MODEL (C6E590)=1
wso_wpa_create_phase2_type_model() model=CEDE10
About to call GTK_IS_TREE_MODEL(CEDE10)
GTK_IS_TREE_MODEL (CEDE10)=1
wso_wpa_create_phase2_type_model() model=A35EB0
About to call GTK_IS_TREE_MODEL(A35EB0)
GTK_IS_TREE_MODEL (A35EB0)=1
wso_wpa_create_phase2_type_model() model=EA3F30
About to call GTK_IS_TREE_MODEL(EA3F30)
GTK_IS_TREE_MODEL (EA3F30)=1
wso_wpa_create_phase2_type_model() model=E74890
About to call GTK_IS_TREE_MODEL(E74890)
GTK_IS_TREE_MODEL (E74890)=1
wso_wpa_create_phase2_type_model() model=F73140
About to call GTK_IS_TREE_MODEL(F73140)
GTK_IS_TREE_MODEL (F73140)=1
wso_wpa_create_phase2_type_model() model=EC8230
About to call GTK_IS_TREE_MODEL(EC8230)
GTK_IS_TREE_MODEL (EC8230)=1
wso_wpa_create_phase2_type_model() model=2AAAB000EA80
About to call GTK_IS_TREE_MODEL(FFFFFFFFB000EA80)
Segmentation fault (core dumped)