I was surfing the Web today when I noticed that Camino seemed to be hanging or stuck on a page. I opened the Finder window and just happened to notice, next to my usual HD, Network, and external drive icons, an unfamiliar iMac-style icon called "[my name]'s Computer," clicking on which simply showed the other icons I mentioned. I had never seen an icon for my overall computer system before. I force-quit the browser, and it was gone. I may be paranoid, but...was my Mac under "invasion" by some sort of spyware, or was it simply having a Maalox moment? and how I could I tell? and what would I do about it?