I don't know what happened. I restarted mac and since then I don't have top right icons: network, sound, battery, clock, notification but from time to time it blink and for a moment become visible but immediately disappear. I tried (and with sudo):
killall -KILL SystemUIServer
No matching processes belonging to you were found
I restarted mac and still same. Is there any way that I can reset this icons settings? And I repeat wired thing is that it blink as I move cursor and from time to time for a moment I see items. And also skype, dropbox and spotlight icons are always there.