Obviously should have known better, but while visiting a newpaper site (herald.com, which is the Miami Herald), a dialog box pops up saying that a new version of Flash is available (the first feature listed is something about 3D sites, and it mentioned not having to restart Firefox to install). I run Flashblock on Firefox, but figured why not have the latest version of Flash, and clicked the download button. Fortunately, between then and the dialog box asking whether I wanted to run a program downloaded from the Internet, I vaguely remembered about these trojans, and clicked cancel, so I never ran whatever may have come next. Since then I've deleted and reinstalled Firefox, searched for a preferences.dyld file (one website suggested) and then ran the following two commands in Terminal as suggested by a recent CNET article, and nothing has come up. defaults read /Applications/Safari.app/Contents/Info.plist LSEnvironment defaults read /Applications/Firefox.app/Contents/Info.plist LSEnvironment Is there anything else I need to do to make sure I didn't accidentally install this trojan (assuming it was one). I realize that virtually nobody recommends an antivirus software for the mac, but is this something that Apple's security system (I'm running Lion) would pick up and deal with automatically. Sorry for sounding paranoid, but I'm just pissed that I was this stupid to even fall for this. Thanks in advance!