Getting "Session Ended" popup in admin Every minute or so I get the "Your session has ended" popup in the admin. Entering my password just pops the message back up. If I reload the page I'm still logged in.

I'm running Craft in vagrant so maybe it's a permissions problem?

It could be related to this question since I had that exact problem but setting the permissions in vagrant fixed that particular problem.

I've tried the requireUserAgentAndIpForSession, overridePHPSessionLocation, and userSessionDuration config settings, but none of them seem to solve the popup.
We were experiencing this issue, as well as the randomly logging out issue.

As I answered on that question, we fixed both these issues by switching session.auto_start to Off

session.auto_start = 0