We are running powerpoint presentations on different computers in my office. All computers have ppt 2007. Some computers are Vista some Windows 7. On one of the Vista computers the text is messed up. It doesn't fit within the text box as it does on the other computers. This affects the display of the slides, causing the text to be out of place and often behind images. On all computers the display setting is at the highest resolution. What could cause this problem?