Description of problem:
Epiphany (Web)  intermittently closes.  This seems to happen more frequently when playing videos.

Version-Release number of selected component:
epiphany-3.6.1-2.fc18

Additional info:
reporter:       libreport-2.1.5
backtrace_rating: 4
cmdline:        epiphany
crash_function: icon_loaded_cb
executable:     /usr/bin/epiphany
kernel:         3.9.6-200.fc18.i686
runlevel:       N 5
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 icon_loaded_cb at ephy-hosts-store.c:51
 #1 g_cclosure_marshal_VOID__STRING at gmarshal.c:964
 #6 webkitFaviconDatabaseDispatchDidReceiveIcon at /lib/libwebkitgtk-3.0.so.0
 #7 WebKit::FrameLoaderClient::dispatchDidReceiveIcon at /lib/libwebkitgtk-3.0.so.0
 #8 WebCore::IconController::continueLoadWithDecision at /lib/libwebkitgtk-3.0.so.0
 #9 WebCore::IconController::startLoader at /lib/libwebkitgtk-3.0.so.0
 #10 WebCore::Document::implicitClose at /lib/libwebkitgtk-3.0.so.0
 #11 WebCore::FrameLoader::checkCallImplicitClose at /lib/libwebkitgtk-3.0.so.0
 #12 WebCore::FrameLoader::checkCompleted at /lib/libwebkitgtk-3.0.so.0
 #13 WebCore::FrameLoader::finishedParsing at /lib/libwebkitgtk-3.0.so.0