I can tell this is a troublesome bug to resolve, especially when it does not happen to you. But I have an idea on why it has happened on my system.
First, I am running on a WiFi network and occasionally the WiFi connection display pops up and sayd the connection was connected, as though it had been disconnected momentarily. If the auth check were to go through at the right time maybe that would cause a problem.
-- Brennan Stehling Offwhite.net LLC brennan@offwhite.net