I have the same problem. It actually started BEFORE I applied the update, hit the 'later' button on the update notification, and soon after the status bar disappeared. Applied update, same problem.
Phone boots up, notification bar is there. If i try to swipe it down, sometimes it works, sometimes it freezes up the touchscreen for a few seconds. Then after a few minutes, it disappears entirely. If the phone rings have to click on the dialer icon to get the "Answer" screen to show up.
If I look in the Running Apps the Status Bar and several other apps are in the "restarting" mode.
Based on another thread I read this may have something to do with the Universal Inbox. I was playing around with the accounts in my universal inbox and bang my status bar came back without a reboot. Victory was short lived, however, bout 10 minutes later it disappeared again and I can't make it come back without turning the phone off now.
