So my wife tells me she was surfing the web on Safari (Mac OS) the other day and clicked on a Google search result page and got an *uncloseable* window that popped up saying "You have spyware" and a file suddenly appeared on the desktop. She tells me it was an .exe file, which means really this is a non-issue since this isn't a Windows machine. But I'd like to know - how did this happen in Safari? How was the window made uncloseable? How was a file made to download spontaneously? And does that (by itself) even pose a potential risk? Very sorry I don't have the URL for the site right now, but I'll try to recover it from her history later tonight and repost if I can.