On Mon, Oct 21 2013, Hans Hagen wrote:

>>>> How could I solve this problem please?
>
> \definefontfeature[oldstylenumbers][onum=yes]
> \definefontfeature[inlinenumbers]  [lnum=yes,tnum=no]
> \definefontfeature[tabularnumbers] [tnum=yes,lnum=no]
>
> \definefontfamily[mainface][sans][Constantia]
> \setupbodyfont[mainface]
>
> [...]

Hi Hans,

Does your answer mean, that you cannot reproduce the problem?
I've tried with Constantia, and I get the same horizontal shift as in my
previous example PDF file. My ConTeXt version is 2013.10.20 07:09

I attach a new PDF file with Constantia (from my Windows-XP installation).

Is there a problem with my fonts?

-- 
           Peter