Users should keep AV protection updated and avoid any untrusted Powerpoint files they find in their email. Powerpoint - New Unpatched exploit being used in targeted attacks http://www.eweek.com/c/a/Security/Microsoft-Warns-of-Attacks-on-PowerPoint-Vulnerability-345397/ http://www.avertlabs.com/research/blog/index.php/2009/04/03/next-up-office-exploits-reloaded/ http://vil.nai.com/vil/content/v_154518.htm Security Advisory 969136 - Vulnerability in Microsoft Office PowerPoint http://www.microsoft.com/technet/security/advisory/969136.mspx QUOTE: Microsoft is investigating new reports of a vulnerability in Microsoft Office PowerPoint that could allow remote code execution if a user opens a specially crafted PowerPoint file.