Preview useless with non-English PDFs???

Well, I can't read Chinese, but the characters do not appear to be garbled in any way. You may have a corrupted font.

Tried a reboot / repair permissions / disk repair?

If the problem persists after that, then it's a font problem.

M.

I just found out if you turn off anti-alias in Preview's preference, they become "more" readable

Slightly more, but still quite different than Adobe Reader.

Great. Looks like Preview is useless to me then. You can see that in the Adobe version, the characters are nice and square whereas the Preview version is all out of whack.