Strange behaviour....

some 10.1.0 clients are updating to 10.1.2/1 from 10.1.0 without being told to.

We recently jumped from 10.1.0 to 10.1.3 on the server, and a small number of machines for predepolyment testing.

Now a random number of machines are getting a partial update at random times.

Has anyone seen this behaviour?