Thank you all for answers,
I have installed latest M92 firmware and nothing has changed.
I have writed to customer support, I told them the problem detailed with email attachments but Im afraid they are not aware of problem.
Everybody knows that page referring for academic purposes is very important, it must be correct. Deleting some pages or adding page difference on title is not so easy for every single book or article.
With "shown" numbers I mean the number of page itself and not physically writed number on it.
I do page number changes with Adobe Acrobat Pro. For example all pages till "introduction" have roman numbers and latin numbers start on first page of introduction.
Well, Im using Kindle since few years and it recognizes difference between logical and physical page number. It shows physical page number on right-bottom and logical number on center-bottom.
I dont understand, Since Kindle DX can recognize that with a few years old firmware why M92 cant do that!
Except that I really loved this ereader, everything is perfect! but this coins made it useless for me
Its a shame!
P.S. Im using a 3.3. firmware hack on Kindle DX to higlight text on PDF. But even older kindle firmwares can recognize page difference.