On Mon, 18 Oct 2010 18:17:28 +0200, Rainer Thiel <r.thiel@uni-jena.de> wrote:
> 
> I have a strange problem with timestamps with repeater intervals and
> think I am doing something wrong.
> 
> I had assumed that entering in a new TODO item a timestamp like "oct
> 19 10:00 +14w" pressing C-c . would show the entry in the next 15
> weeks including the day of tomorrow.  In reality, the item shows up
> *only* tomorrow, but not in the next 14 weeks.
> 
> Any idea what I am doing wrong?

That expression tells org to repeat that event every 14 weeks.  If you
want a repeat entry with an end date, you will need to resort to diary
expressions (see diary sexps in section 8.1 of the manual).