Severe security hole in Apple's Safari browser discovered:
A severe security issue has been discovered in the Apple Safari browser that can result in the execution of evil shell scripts without notice of the computer user. This article describes the issue and the countermeasures to prevent harm from your system.
One of the first things I did with Safari was to turn of open "safe" files. I am just not comfortable with code downloaded over the internet running by itself. Whether there is a vulnerability or not.