I'm middlin' home-based tech savvy but agree with Silvertwinkie's post at 4:39PM. Windows is out there in large number to serve as the distraction for the anonymous challenged software hacker. I do not follow this seriously but have heard of one loser who targeted Macs earlier this year. Regarding the Linux and other platforms I read this over the past weekend: Tabbed Browsers Can Disclose Confidential Info
I have but am not thrilled by Windows. McAfee's or Norton's online-updating antivirus programs are very
good and I have zero virus probems. Yes, it does require an annual fee on the order of $35. Malware is still a big issue and depends on how far the Windows user delves into websites that have unscrupulous business practices (I believe gaming sites were mentioned before. Porn anyone?). Ad-Aware is a start and Spybot is better, though more difficult to understand.
My Linux-based super smart in-law has at times been set up so he couldn't receive email in anything but the most basic fonts. I'm not going there myself. Mac is still the easiest minority user route. It's just that I'm not ready to buy Photoshop all over again...