Sorry to answer to this old post, but I encounter an annoying behaviour with "recent" versions of ADE and some other software like fbReader.
In french, it is typographically correct to write, let's say, "Mlle" with "lle" as superscript :
Same with "Dr", "Me", etc.
The annoying behaviour I am talking about is that the software might break the word between "M" and "lle" to render a new line within a paragraph, instead of starting before or after the complete word. It would break chemistry formulas, etc.
This is not related to hyphenation since it was the first thing I disabled when encountering this for the first time.
It does not happen with ADE 1.x and on my PRS-T1, or when viewing the xhtml file in any browser I have tried.
It happens with ADE 2.0, Adobe Reader and fbReader on a friend's Pocketbook 623. I suspect it happens on all recent readers.
May be someone has some trick to avoid that ?