Comment 23 for bug 1036830

I've been experiencing this error for a while too, and reading the comments above I see that ssh -X was a component of the issue for a lot of people. I frequently log into this computer via ssh -X. I hadn't thought to consider that as a potential part of the issue, before. Looking at a backup .Xauthority I made when I was clearing it out to log in again, I see that there are a lot of magic cookies inside.