I upgraded a computer to Mavericks and the system menu bar items (time, power, wifi, etc) are now missing! Well, they blink into existence every now and then and then go away. 
Any 3rd party items show up just fine however.
I'd had Bartender installed before the upgrade (over a 10.8.4) install. After noticing the issue, I uninstalled Bartender but to no avail.
Any ideas?
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Also worth noting
Notification center IS there
Spotlight won't activate with the short but key (command+space)
iStatMenus 3 refuses to stay activated
	
		
			
		
		
	
				
			Any 3rd party items show up just fine however.
I'd had Bartender installed before the upgrade (over a 10.8.4) install. After noticing the issue, I uninstalled Bartender but to no avail.
Any ideas?
----------
Also worth noting
Notification center IS there
Spotlight won't activate with the short but key (command+space)
iStatMenus 3 refuses to stay activated