Seeing if anyone has done a clean 10.10 install on a late 2013 27" iMac. If so, any annoying bugs? Major problems? Reason for asking is, I want to avoid any iOS 8 type problems. I don't want to spend a week troubleshooting app, network, permissions, and peripheral bugs. So perhaps a related question is, are you waiting for 10.10.1 before installing?