IMO . . . people who get virus's on windows computers are simply not computer literate . . . . who can't tell the difference between a malware site and windows it self . . . . who dont understand that a .EXE is a program file (that could potentially contain a virus) and not a myspace layout or a music file . . . .

I have never used an anti virus with windows in my life and I can never had a virus . . . The first thing I used to do on a new WinPC was uninstall the free trail virus protection BS (they really slow down the sh*t out of an already bloated WinPC) . . . honestly they dont protect you against sh*t . . . they simply protect you from the malware that they know about . . . . but scumbags write new viruses for Windows Everyday . . . their is a reason that windows vista and up "DIM THE LIGHTS" to ask you if you REALLY want to run every new program that you open from unknown sources . . . it is because programs can hurt your PC . . . they can spy on you . . . . they can delete and edit system files . . . they can do what ever the program coded them to do . . . .

They same is true in Linux and Mac but their are to big differences . . . . first is market share . . . . most people use Windows so most viruses are written for Windows . . . Second is password protection . . . If the person using your Linux / Mac Box doesn't know the password it is pretty damn hard to do any real damage . . . you can install or run new programs with out the password not can you change system settings. . .. . on a Mac you can't even install iTunes without the password . . . makes sense . . . so you can freely allow, with a clear mind, your friends, co-workers, students and family to use your computer without the worry that they are going to accidental screw something up !

But that is they thing the though . . . since windows is a different language than Mac/Linux so they virus's simply wont work on these operating systems . . . feel free to download and open up all the viral infected EXE's that you want on Linux . . . the wont do anything!

Windows 7 is "fast" I guess as compared to Win Vista but as compared to Ubuntu or linux in general it simply doesn't compare . . . you have to understand that nearly the entire internet is running linux . . . from facebook to twitter - Google and even this forum . . . all their severs are running linux and it is for a good reason . . . Linux is built for efficiency, flexibility, stability and compatibility . . . .
I would hate to image Google having to run on a Windows Sever . . . It would be extremely slow and most likely take an extremely long time to return a search query to the end user . . . .