So, I am out for the day and I come back to my Mac, and the screen is completely filled with notifications, mostly from Skype, every message, call, chat, sing-in and sign-out message is there in a separate popup, and I have to hover til the X appears and then click it, for every single individual popup!!! There is no "Close All Popups" feature, nothing.
That drives me totally nuts to the point that I am glad that the upgrade to Safari has killed it!
Otherwise, it's not bad while you are sitting there - just don't ever step away.
G>