Not that hackers are really targeting Linux that much anyways - it's not a big enough target to be useful to them.
But yeah - those who claim the security of Vista or Windows 7 is "no better" than XP are just fooling themselves.
"Why do you think so many users are still running Windows XP?"
In the case of my grandparents, it's a case of they don't want to buy a new OS/computer right now
. And I do think their XP machine is infected, unfortunately. They can access most every website, except for Windows Update - a sure sign that something is blocking it . What's worse, the AV solutions I've tried don't detect anything, so they're definitely looking at a drive wipe and OS reinstall or a new computer to fix it. 
