Description of problem:
I tried to run a wireshark within and outside of the virtual guest at the same time. Both must have depleated the available memory, causing this crash.

Version-Release number of selected component:
virt-manager-0.9.5-1.fc18

Additional info:
reporter:       libreport-2.1.5
backtrace_rating: 4
cmdline:        python /usr/share/virt-manager/virt-manager.py
crash_function: dequeue_pending_request
executable:     /usr/bin/python2.7
kernel:         3.9.9-201.fc18.x86_64
runlevel:       N 5
uid:            10004
var_log_messages: Jul 22 11:38:14 alp-desk1 abrt[13954]: Saved core dump of pid 21444 (/usr/bin/python2.7) to /var/tmp/abrt/ccpp-2013-07-22-11:38:11-21444 (424685568 bytes)
xsession_errors: 

Truncated backtrace:
Thread no. 1 (10 frames)
 #4 dequeue_pending_request at xcb_io.c:177
 #6 XGetWindowProperty at GetProp.c:69
 #7 fetch_net_wm_check_window at gdkevents-x11.c:2671
 #8 gdk_x11_screen_supports_net_wm_hint at gdkevents-x11.c:2852
 #9 gdk_x11_window_set_user_time at gdkwindow-x11.c:3741
 #10 setup_toplevel_window at gdkwindow-x11.c:637
 #11 _gdk_window_impl_new at gdkwindow-x11.c:821
 #12 gdk_window_new at gdkwindow.c:1456
 #13 gtk_window_realize at gtkwindow.c:4843
 #18 gtk_widget_realize at gtkwidget.c:3561