When I export one particular InDesign file (Mac CS 5.5, Version 7.5) to PDF the body text font displays heavier on the 2nd and third page, though it is it's normal weight on the first page. I have rebuilt the document exporting to pdf after the text was formatted, after the images were placed and the body text displays the same on all pages. After I add hyperlinks to urls in the sidebar text, export to pdf then the body text displays heavier on pages two and three than on page one.
I am not sure if this is an InDesign issue or an Acrobat issue. How do I fix it?
It's a known transparency issue. Keep the text above the transparent objects might help, but probably won't.
I should add this shows on screen and in low-res prints, but usually does not affect press output.