Ever since I upgraded to Lion I've noticed that I cannot double side print in Reader. Other apps are set to double side print without issues, but I can't get Reader to DSP. I have Adobe Reader X (10.1.0), Mac OS 10.7.1 and a Lexmark Prevail Pro705. I've even gone to the Lexmark site and updated my driver. Any thoughts? I checked the sticky on the Forum Homepage about Lion compatability, but I was unsure how to translate the work around to my situation.
I ran into the same issue - Adobe Reader does not print double sided on my Lexmark Genesis S815. Did you find a solution in the meantime?