Thanks for all replies Hans, Steve, Bill and Luigi. Sorry for the confusion generated by my questions. I'll try to summarize the whole thing as brief as I can.
I happen to have an Sony PRS-T1 reader in which I noticed that the FreeSerif fonts where wrong kerned. I thought it might be something wrong in the fonts and I used ConTeXt to check that. Until this morning I asked whether TrueType kerning was enabled when all OpenType features were disabled, I took for granted that that old TrueType kerning was enabled when the modern OpenType kerning wasn't. Now I know I was wrong. But I reported a bug at https://savannah.gnu.org/projects/freefont/ and posted the PDF output from ConTeXt. ConTeXt is perfectly fine with FreeSerif, FreeSerif has valid kerning and the problem is in the Sony PRS-T1 reader that cannot read the kerning and ligature information. I have even discovered that the Sony PRS-T1 ereader has a bug that prevents the display of the FreeSerif bold font. So, I knew that the ereader had some limitations, but I couldn't imagine it was so buggy. The annoying issue here is that reporting the bug may fix the issue and Adobe might release a new version of the reader. But unless Sony releases a new firmware, those bugs are there to stay. Many thanks for your help and apologies for the confusion, Pablo -- http://www.ousia.tk ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : firstname.lastname@example.org / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________