Looks like the adsense trojan that poped up in december is done for. Maybe because google was after them, anybody see a change in earnings? http://www.techshout.com/internet/2006/16/google-adsense-trojan-horse-stops-riding/
I doubt that it was very widespread. Unless you are some kind of idiot you should be safely protected by multiple firewalls, anti-virus software, spyware removers etc.
Mac users 'too smug' over security Technology commentator Bill Thompson is worried about the lack of herd immunity among his fellow Apple Mac users. full story http://news.bbc.co.uk/2/hi/technology/4609968.stm