HT5048: About the OS X Lion v10.7.3 UpdateLearn about About the OS X Lion v10.7.3 Update
Currently Being ModeratedJul 22, 2012 7:14 AM (in response to Gillesmd)
Shut down by holding down the power button. Then reboot. If this continues you should boot to the lion Recovery disk and run Repair Disk from Disk Utility. If DU cannot repair then you will need a stronger repair utility like DiskWarrior to rebuild the directory.