sshd logging changed?

[Tom Horsley]

I noticed I got a sshd update recently. Now I have bazillions
of messages about disconnects:

Disconnected from NN.NN.NN.NN port 41236 : 1 time(s)
 Received disconnect from NN.NN.NN.NN port 39642:11: disconnected by user : 1 time(s)

Logging in and logging out are are normal activities
in a working ssh. How the devil can I stop this logging
of utterly useless information? (Which for me happens
every 5 minutes due to a cron job I have running at
work that phones home :-).