[O] Surprising behaviour with agenda file

[Andreas Amann]

Hi list, 

I encounter the following surprising situation when using Org Agenda.

Suppose you have an agenda file which looks like this:
---- test.org ------
* bar
<2011-09-29 Thu 12:00> 
<2011-09-30 Fri 13:00> 


* foo
<2011-09-29 Thu 15:00> 
<2011-09-29 Thu 16:00> 
--------------------

M-x  org-agenda-week-view 
then shows:
--------------------
Week-agenda (W39):
Monday     26 September 2011 W39
Tuesday    27 September 2011
Wednesday  28 September 2011
Thursday   29 September 2011
               8:00...... ----------------
              10:00...... ----------------
  test:       12:00...... bar
              12:00...... ----------------
              13:09...... now - - - - - - - - - - - - - - - - - - - - - - - - -
              14:00...... ----------------
  test:       15:00...... foo
              16:00...... ----------------
              18:00...... ----------------
              20:00...... ----------------
Friday     30 September 2011
  test:       13:00...... bar
Saturday    1 October 2011
Sunday      2 October 2011

----------------------

What surprises me, is that "foo" only appears once (Thurs 15:00)
although I specified it twice in the agenda file. If the two entries in
question refer to two different days, like "bar" in the above example,
everything works as expected.

Is this a bug? If it is considered a feature I would be interested to
know, how to work around it. 

Thanks, 
Andreas