Is there a place in Reader X preferences to force Reader to display in a character set of your choice (Win, UTF-8, etc.?)
Also, I'm having minor display problems displaying Apple-written PDFs on a PC. Case in point: the iPad manual. The chapter titles in the left bar have a couple of weird characters in them. I assume this is because Apple's default Symbols font doesn't jibe with Wingdings from Redmond?
Nice speedup in X, BTW. And it runs fine here on XP as well.
You cannot change character encodings. The problem you are seining with the Apple fonts is caused by the font not being embedded into the pdf. This can with any font.