I've done this from three different machines now, and gotten the same hit on Norton - finder.ico is somehow infected with a keylogger. You might try to get someone on a windows box to grab the zip pack and clean it up - or just nuke finder.ico for now - its one of those File/header API bugs.
I can't figure out why the "Samurai" icon named "Finder.ico" keeps coming up as a Trojan with Avast v.6.0.1289. I have submitted for a false positive, so far nothing. I have yet to test it against a site that uses multiple antivirus. Any Ideas?