OS X Virus Leap-A Update
This article is very interesting: The Cult of Mac Blog
Two points come to mind:
1) How soon will Apple patch these security holes?
2) Sensible computing practice will prevent this virus from infecting your Mac. - Never accept or open files from unknown sources. Even if the source is trusted always double check before opening a file. Better safe than sorry.
Does this mark the end of innocence on the Mac? Possibly. Is that a bad thing? No. Apple have a chance to take action before a problem exists. OS X is still a much more secure OS than Windows. Also thankfully Microsoft no longer provide IE for Mac OS X.
Remember play safe. Your PC or Mac is an essential gadget and you'll regret anything you do to harm it.