I logged on to server "DAYZ WA 2-18" (I.P. 108.61.234.133.2303)and played for less than one minute before receiving "Authentication timeout" error. I was in the northwest area near Sinistok, driving a v3s at the time. On logging back in, I received only 30 second wait (bad news) had lost all gear and was a new spawn on the coast.
Similar occurence happened while logging out of a different server: received "no message received for X seconds", as if server was resetting - I logged out and saw that the server had not reset, but on logging back in I was fresh spawned on the coast.