What are operating systems pro, and cons? because I really need to know. I want to install this Ubuntu on this http://www.walmart.com/ip/HP-Black-...350-Processor-Windows-7-Home-Premium/17218904 1.(Mac osx) Sidenote I don't know much about this. 2.Windows 7,vista,Xp (Don't get me started... 3.(Ubuntu) I heard this is really fast, and can catch no viruses . Ps. I think Theres more operating systems, but im not sure yet. If some of yall know Feel free to add some info about other ones, so we can let people know!!! .