Good to know that it could take hours. Upgrading to Yosemite on a Macbook Air (about a month old) and it's taking a few hours so far. Didn't check /usr/local bu

Good to know that it could take hours. Upgrading to Yosemite on a Macbook Air (about a month old) and it's taking a few hours so far. Didn't check /usr/local but will just let it go for now.