On Wed, Sep 21, 2011 at 11:47:35AM +0100, Robert Jones wrote:

Hi All,

#include <boost/progress.hpp>

   boost::progress_timer t;

0.00 s

I was expecting a number >= 5.00 s! What am I missing?

According to the docs for progress_timer, it uses clock().
The man page for clock(3) on my system claims:
* The clock() function returns an approximation of processor time used
* by the program.

That doesn't seem to refer to wall time, so I would recommend you to
file a bug against this library.