Use this:
Code:
The dreaded $\mu$ character as in $\mu$s
Maybe you forgot to surround the \mu with '$' which you should do when using math symbols inline.
I pasted this line into the document on page 8 of the "Not so short introduction to Latex" and it showed up exactly as you want.
jlinkels
Code:
documentclass[a4paper,11pt]{article}
% define the title
\author{H.~Partl}
\title{Minimalism}
\begin{document}
% generates the title
\maketitle
% insert the table of contents
\tableofcontents
\section{Some Interesting Words}
Well, and here begins my lovely article.
The dreaded $\mu$ character as in $\mu$s
\section{Good Bye World}
\ldots{} and here it ends.
\end{document}