Okay.. i was hoping Sierra would solve this but it didn't. Maybe someone can help. A VERY annoying thing has been happening for a while. Basically my current "active" window will just randomly deactivate. To explain.. so say you have 4 programs open and you are "active" on one of them... all the other programs are "greyed out" so to speak. My problem is that I'll have a program active and then it will just grey itself out.. sometimes literally AS I'm typing.. and i'll have to mouse to it and select it again!?!? Happens on all programs.. and I have NO idea.. and after a lot of searching just can't figure anything out... (hard to know exactly what to search for even) Any of you geniuses have any ideas? Thank you in advance!!!!