Minimal example, run with xelatex and TeXlive 2010:
\documentclass{article}
\usepackage{polyglossia}
\begin{document}
\showhyphens{helicopter}
\end{document}Why does my log file show Underfull \hbox (badness 10000) in paragraph at lines 4--4 [] \EU1/lmr/m/n/10 helicopter instead of Underfull \hbox (badness 10000) in paragraph at lines 4--4 [] \OT1/cmr/m/n/10 he-li-copter I'm not worried about default fonts or encodings, but the hyphenation. Best, and thanks in advance, Dominik
