My primary use for the Vienna RSS Reader is to follow issue on Atlassian Jira OnDemand. This is an authenticated https connection. Apparently Atlassian requires the client software to return the authentication cookie to the server, otherwise Jira OnDemand will log out all sessions, including the manual sessions I have open in my browsers outside of Vienna. This is exactly what was happening to me. I've stopped Vienne now for some time, I no longer get logged out of all my Jira OnDemand sessions.