IT Services recommend you apply this security update is you use or have Safari installed.

Instructions:
On Windows select Apple Software Update, then follow instructions.
On Mac OS X from Apple menu select Software Updates, then follow instructions.

Safari 5.0.1 and Safari 4.1.1 address the same set of security issues.
Safari 5.0.1 is provided for Mac OS X v10.5, Mac OS X v10.6, and Windows systems.
Safari 4.1.1 is provided for Mac OS X v10.4 systems.

Safari 5.0.1 is available via the Apple Software Update
application, or Apple's Safari download site at:
http://www.apple.com/safari/download/

Safari 4.1.1 is available via the Apple Software Update
application, or Apple's Software Downloads web site:
http://www.apple.com/support/downloads/