Bug#593982: gdm crashes occasionally after waking monitor from sleep

[Peter Tenenbaum]

This morning I had a crash of this form.  Screen saver was on, screen sleep
was off.  I was surfing in ice weasel and had been surfing around for a few
minutes, but when I went to 511.org the crash occurred.  I realized that all
of my crashes of this type have occurred when I surf to 511.org, with
perhaps one exception.