As a Windows and Linux user, I was expecting some technical information about what made him quit. There wasn't anything specific as to why those problems occurr

As a Windows and Linux user, I was expecting some technical information about what made him quit. There wasn't anything specific as to why those problems occurred. My brother had his first Macbook Air a few months back and he didn't do the Yosemite upgrade as well. When I ask him, why? He replied, "I don't think the update have anything for me."