[Driftstörning] Maintenance on authentication servers

[Björn Sandell]

Tomorrow (2018-02-21) starting 13.00 some of our authentication servers
(kerberos) will be upgraded.

During the upgrade it will not be possible to change passwords or create
new accounts, and logins might be bit slower than normal.

The maintenance is expected to be completed within 3 hours.

-- 
Björn Sandell <biorn at chalmers.se>