[luatex] libertineotf: reduce startup time?

[Martin Schröder]

Hi,
I'm creating a small document with

\documentclass[a4paper]{article}
\usepackage{luatextra}
\defaultfontfeatures{Ligatures=TeX}
\usepackage{unicode-math}
\setmathfont{Latin Modern Math}
\usepackage{libertineotf}

The startup-time of libertineotf is quite noticeable;
the machine "stops" for some seconds to load all the
cached font info (and this on a quite fast machine).

Is there a way to reduce the startup time of using
libertine?

Best
   Martin