Reply To: Strange text effect with colored background and psd/png file inserted

This sounds like it’s a transparency flattener issue. First, make sure you’re saving as a version 7 or higher PDF. Also, make sure the PSD/PNG image is set as the same color space as the color background. When you mix RGB and CMYK, the rendering engine has to rasterize the text that overlaps with the image and background – which is difficult enough, but even more difficult when the color spaces don’t match.