We faced the slow login problem with ZCM 10.0.3 and just installed ZCM
10.1 from scratch hoping to have the problem already solved.

If we had about 90 seconds login with the previous version, now this
time reduced to about 25 seconds. Better, but still unacceptable.

I read a lot of messages about this issue in the past, but it seems
that anyone really found the source of the problem.

In our case, it seems DNS is working correctly and there is any
apparent reason for that.

Something important, our users source is AD.

Any idea?

Jose Luis