[ubuntu] Can Ubuntu Bypass Spyware?

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http://ubuntuforums.org – I suspect that my ex placed spyware on my computer when he lived with me. Though he cheated on me the whole time, he still felt it was his right to invade my privacy. I believe he installed this was when I only had regular XP installed. I recently downloaded ubuntu beside my windows. I read that when I use ubuntu, it's impossible for programs installed in my windows XP to work. I am hoping that if this is the case, nothing he put on here 6 months ago will work. Also, he called me several times when I was working on another computer in front of this one, which leads me to believe he has so (Hardware)