Recently both my wife, and my brother have been browsing the internet and one particular search engine (different unrelated searches) brought up a window within safari (with a safari icon) that said that the PC contained signs of viruses and malware. On each occasion I advised them not to click "OK" but to cancel out of the window and shut down safari session. then re-open Safari and go and get "iAntirus for MAC". Both did so and ran scans neither scan found anything on either machine. I am thinking that this is a trap laid to catch out PC users and have them download some king of nasty. Being as this is a MAC environment and that I have had both machines scanned with no result, am I correct? Is this a trap or is it a genuine Safari warning?