C:/WINDOWS/TEMP/a58c8a4a.exe - Trojan horse Downloader.Generic2.CTPI noticed the problem a few days ago, and AVG finally found it and deleted...
But, I must admit that I`m not really good into porn and other "suspicious" sites...just the ART ?!
And I didn`t got it by E-mail, and I use "Firefox" browser...huh.