From the last few days, PowerPoint 2003 has started acted a little weird — when I open any presentation or template, a window shows up stating that some of the text, images, or objects on slides within the presentation or the template have become corrupt. Once I click OK in this window, the presentation or the template does open — but some of the slides show blank white placeholders instead of showing up transparently over the background — PowerPoint also seems to behave as if these slides are corrupt.

