Thanks for the tip, in my case I rebooted and it came back.
Seriously ... Google ... this is the worst launch ever.
Voicemail alerts requires reboot
Ok Google comes and go
Unlock animation is not fluid (near the end of the growing circle)
And those are only the one I personally experienced. The OS is really good and the overall experience I have with ym N5 overbalances these few counterparts, but I thing that if I would have switch from a N4 instead of GNex, I would want my money back. Test your **** Google, those are all normal usage, nothing fancy. Use your god damn phone for more than 2 days and you'll find all this.