Did the upgrade, then it rebooted three more times during the startup splash... it looked like the OS was crashing - heart beat started racing! Didn't find any other threads about the OTA update, so hopefully you won't get the same shock as I did on the phone rebooting a few times :)

This is on a product name yakju. About Phone details are now:
Model number: Galaxy Nexus
Android version: 4.04
Baseband version: I9250XXLA2
Kernel Version: 3.0.8-g034fec9
Build number: IMM76D

I haven't noticed any issues after the upgrade 5 min ago, but will add replies if I do.