I have been having lots of problems recently with my Mac shutting down. I've done lots of Repair Permissions, and today I tried verify disk. I received the following results: Invalid volume file count Error: filesystem verify or repair failed Any thoughts on next steps? I'm trying to put together an Imovie project and it's not going well because of my shutdowns. I have a two year old iMac with the newest OS. Any help will be appreciated!