Description of problem:
During log-in.

Version-Release number of selected component:
xfce4-sensors-plugin-1.2.3-3.fc17

Additional info:
backtrace_rating: 4
cmdline:        /usr/libexec/xfce4/panel-plugins/xfce4-sensors-plugin '' 17 18874416 xfce4-sensors-plugin 'Sensor plugin' 'Show sensor values.' ''
crash_function: standard_free
executable:     /usr/libexec/xfce4/panel-plugins/xfce4-sensors-plugin
kernel:         3.7.9-104.fc17.i686
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #2 standard_free at gmem.c:98
 #4 g_slice_free1 at gslice.c:1111
 #5 g_type_free_instance at gtype.c:1937
 #7 gtk_rc_style_finalize at gtkrc.c:1202
 #9 g_datalist_clear at gdataset.c:283
 #10 g_object_finalize at gobject.c:1018
 #11 gtk_object_finalize at gtkobject.c:450
 #12 gtk_widget_finalize at gtkwidget.c:8847
 #13 gtk_progress_finalize at gtkprogress.c:271
 #16 gtk_object_destroy at gtkobject.c:406