Screen lock settings won't change on Ice Cream Sandwich with MS Exchange Email I have a Samsung Galaxy Nexus running Android 4.0.2. I have a corporate email set up to Microsoft Exchange. My sys admin said we use the default mobile policies for Exchange, but he doesn't know the details.

My phone's Screen Lock setting is set to None and I cannot change it. If I select PIN, it asks me to enter and confirm a PIN, then returns to the Security settings page and shows my Screen lock is set to "None"

After reading http://boingboing.net/2012/03/13/the-scary-consequences-of-a-lo.html I thought it best to at least have a PIN, but right now I can't set one. Any suggestions?

--- update

I just did a test (with my sysadmin's help). We set up a Nexus One with Android 2.3 and the lock screen settings worked fine. Is there something in ICS?
Well. First, I deleted my Exchange account. Then I was able to change the screen lock settings and the change would be displayed in the settings page, but when I locked the screen, no PIN or pattern was required to unlock. Then I power cycled the phone. After that I was able to successfully use Screen lock settings. Then I added back my Exchange account, and the phone continued to work fine.

I have no idea what the root cause of my problem was, but it is all working now.