You need to select an outer theme. \useoutertheme{infolines} should give you the desired format.
If you just want to include the numbers, you have to adopt the original code for the footline from the outer theme shadow which in turn uses the the format from the split theme.
\documentclass{beamer}
\usetheme{Warsaw}
\title{How to number the ...?}
\author{My name}
\date{06.06.2005}
\defbeamertemplate*{footline}{shadow theme}
{%
\leavevmode%
\hbox{\begin{beamercolorbox}[wd=.5\paperwidth,ht=2.5ex,dp=1.125ex,leftskip=.3cm plus1fil,rightskip=.3cm]{author in head/foot}%
\usebeamerfont{author in head/foot}\insertframenumber\,/\,\inserttotalframenumber\hfill\insertshortauthor
\end{beamercolorbox}%
\begin{beamercolorbox}[wd=.5\paperwidth,ht=2.5ex,dp=1.125ex,leftskip=.3cm,rightskip=.3cm plus1fil]{title in head/foot}%
\usebeamerfont{title in head/foot}\insertshorttitle%
\end{beamercolorbox}}%
\vskip0pt%
}
\begin{document}
\begin{frame}
\maketitle
\end{frame}
\section{Intro}
\begin{frame}
\frametitle{There are many ...}
\end{frame}
\end{document}
Note that by moving the \title etc into the preamble, this will also be used for the PDF metadata.
footlineelement manually, using the code from the Warsaw theme, see edit above. – Carsten Thiel Jan 03 '11 at 14:53