Microsoft has released a hotfix for PowerPoint 2003 that addresses a file corruption issue when presentations are edited with newer versions of the software.  When you open presentations that contain layouts with background images in PowerPoint 2003, an error may occur. When the error occurs, you receive a message that states that some contents (text, images, or objects) have corrupted.  This hotfix addresses this issue and can be found at the following knowledge base article: http://support.microsoft.com/kb/2543241