Comment 47 for bug 788102

(In reply to Emlyn from comment #43)
> With absolutely no evidence to support this, I'm convinced that this issue
> could be related to <a
> href="https://bugzilla.mozilla.org/show_bug.cgi?id=680090">680090</a>...at
> least for certain users.

Since the problem has been happening since before 5.x (for me) I don't think so.