thanks for the answers, I got some more precise information about the problem: the fonts are embedded, I checked this with Acrobat reader. The problem concerns only the headings (I use the document class article on lyx 1.3.4 with mathptmx): When you try to work on this font in the document with Acorbat you get the error message "you can't work on this font" the font attributes show "times bold ~29". Working on the normal text is no problem... thanks
