Yesterday afternoon, Apple released Mac OS X Mavericks, a free upgrade available via the Apple Store.
Often, it takes some time for 3rd party developers to make their products fully compatible with new OS releases. Early Mavericks adopters at numerous universities have discovered the Cisco NAC Agent is not yet compatible.
If you have not yet upgraded to Mavericks, please refrain from doing so at this time. If you have already upgraded, you will be unable to authenticate via the Cisco NAC Agent, and should contact the Help Desk for assistance.
Our network technicians have submitted a bug report to Cisco and are awaiting a response. When we receive more information, we will post announcements to our Facebook and Twitter feeds at http://facebook.com/