[lltx] Problem with slanted fonts

[Yves Scherrer]

Hi,
I have installed TexLive 2010 and am trying out Lualatex.
When typesetting the following example:

\documentclass{article}
\usepackage{fontspec}
\setmainfont{Gentium Basic}
\begin{document}
\textsl{hello}
\end{document}

the resulting pdf file contains the following line:

Basic/I:mode=node;script=latn;language=DFLT;hello

I wouldn't expect to find the font features in there...
What am I doing wrong here?

Let me know if you need the log file.
Thanks
Yves