I see it also on the entire Applications directory as well as System, Users, and Library. The update wouldn't perform, and that's when I discovered the permissions issue on the. Running on it just fine, until I attempted to update Firefox. I have just migrated (using Migration Assistant) the stock internal HD of a 2007-era Macbook pro running 10.7.4, to a new SSD drive.
I have this identical problem, with the identical scenario as depicted in the OP's screenshot post.