Comment 15 for bug 771929

I am experiencing similar issues with 12.04 Unity.
Though I am not sure when/how it occurs, certainly not the 'click top left icon' jig
But I have noticed most of the times after lock/unlock, the windows borders are gone.

I tried 'unity --reset' once but that didn't seem to resolve this.
Please let me know what all information to collect for debugging this and I'll get it done.

It is really painful to logout-then-login to resolve this each time it occurs