The current Linux (openSUSE) experimental version (2.18.5beta) is a huge improvement!

[Ansuz 5]

No more problems shutting it down.
It starts without needing to enter your admin password.
It connects to servers quickly (with previous the experimental version I was using, I had to wait 15 to 30s after the network lock activated before it would connect to a server).

I've had no problems at all with it after using it a few weeks.

[Travisw 0]

This revision didn't change anything for me.  Still requires admin password and if not disconnected using the UI (goes to sleep or wifi disconnects) it won't reconnect unless I reopen the UI cancel the connection attempts disconnect and log out.  Then I reboot Linux and it works again.

[Werekat 0]

Newbie here, ran into the same problem with the current version immediately. Went troubleshooting, found your post, works like a charm. Thanks!