abrt 1.0.9 detected a crash.
Attached file: backtrace
cmdline: /usr/libexec/totem-plugin-viewer --plugin-type gmp --user-agent Windows-Media-Player/10.00.00.4019 --mimetype video/x-ms-wmv
reason: Process /usr/libexec/totem-plugin-viewer was killed by signal 11 (SIGSEGV)
release: Fedora release 12 (Constantine)
Created attachment 414722 [details]
It's a crash in asfdemux from gstreamer-plugins-ugly, which isn't shipped by Fedora.
I would advise you to file this bug upstream (http://bugzilla.gnome.org GStreamer product), along with the web page you were trying to watch.