Microsoft has recently found a potential vulnerability in the Power Point program (a part of the Microsoft Office Suite). here is a link to the story about the vulnerability: Power Point
At this time, Microsoft is sending out updates to patch the vulnerability. It is recommended that you run all windows updates for your computer. If you have the Microsoft Office Suite on a Mac OS X system, it is recommended that you run the Microsoft Office Updates.
It is also recommended that you do not open any power point files from email senders that you do not know or recognize or power point files that you are not expecting to receive.