[O] subscript on a table caption

[Johannes Rainer]

dear all!

I have a strange problem now with org-mode (I don't know whether I had that 
with previous org-versions because I never paid attention): 
any _ I have in a caption is automatically formatted as a subscript, 
independently of using #+OPTIONS: ^:nil or #+OPTIONS: ^:{}.
Is there any other way I can force org-mode to export captions "as-is"? For 
plain text it works nicely, but not for caption (and export to latex or html).

The test org-file I used contains the following:
--------


#+TITLE:TestTest
#+OPTIONS: ^:nil
-----


* Test tables

just in plain text: bla_blu, bla\_blu; both works nicely.

#+CAPTION: Some bla bla and an underscore: bla_blu. The same escaped: bla\_blu. 
Doesn't work for either of them; blu is always used as subscript.
 |    | agegp |     alcgp |    tobgp | ncases | ncontrols |
 |----+-------+-----------+----------+--------+-----------|
 |  1 | 25-34 | 0-39g/day | 0-9g/day |   0.00 |     40.00 |
 |  2 | 25-34 | 0-39g/day |    10-19 |   0.00 |     10.00 |
 |  3 | 25-34 | 0-39g/day |    20-29 |   0.00 |      6.00 |


-------

The _ in the plain text are exported as expected, but not the caption.

I'm using org-mode 8.3.1 (release_8.3.1-166-g5bfdfc)

any suggestions?