Version-Release number of selected component:
yumex-3.0.13-1.fc19

Additional info:
reporter:       libreport-2.1.9
backtrace_rating: 4
cmdline:        /usr/bin/python -E /usr/share/yumex/yum_childtask.py 2 True False /etc/yum.conf
crash_function: subtract_refs
executable:     /usr/bin/python2.7
kernel:         3.11.7-200.fc19.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 subtract_refs at /usr/src/debug/Python-2.7.5/Modules/gcmodule.c:456
 #1 collect at /usr/src/debug/Python-2.7.5/Modules/gcmodule.c:999
 #2 collect_generations at /usr/src/debug/Python-2.7.5/Modules/gcmodule.c:1124
 #3 _PyObject_GC_Malloc at /usr/src/debug/Python-2.7.5/Modules/gcmodule.c:1585
 #4 _PyObject_GC_NewVar at /usr/src/debug/Python-2.7.5/Modules/gcmodule.c:1605
 #5 PyTuple_New at /usr/src/debug/Python-2.7.5/Objects/tupleobject.c:106
 #6 r_object at /usr/src/debug/Python-2.7.5/Python/marshal.c:880
 #12 PyMarshal_ReadObjectFromString at /usr/src/debug/Python-2.7.5/Python/marshal.c:1183
 #13 PyMarshal_ReadLastObjectFromFile at /usr/src/debug/Python-2.7.5/Python/marshal.c:1144
 #14 read_compiled_module at /usr/src/debug/Python-2.7.5/Python/import.c:801