Dear all,
I have found a strange behaviour in capturing column view.

Org-mode version 6.27trans  (of the 08th of June 2009)
GNU Emacs 23.0.94.1 (i386-mingw-nt5.1.2600) of 2009-05-24 on SOFT-MJASON

1. vertical bars in the heading
given the file file.org
----------file.org-------------
    -*- mode: org; -*-
* problems in the properties table
:PROPERTIES:
:COLUMNS: %40ITEM(What?) %Date %7Revision(Rev.) %TODO %Note 
:Date: 
:Revision:
:Note:
:END:
#+BEGIN: columnview :hlines 1 :id local
#+END:
** Temperature in four zones of the kiln
:PROPERTIES:
:Date: 
:Revision: R33
:Note: kiln 1
:END:
*** DONE thermocouple:  <----|  |  |  |---T
    CLOSED: [2009-06-18 gio 11:39]
:PROPERTIES:
:Date: 
:Revision: R1-0509
:Note: at last!
:END:
*** COMMENT hello
:PROPERTIES:
:Date: [2009-06-18 gio]
:Revision: R0
:Note: Even me!!!!
:END:
-------------------------------------

When I view the column view, everything is fine (see image attached).

However when I capture the "local" view, the vertical bars in the <<DONE thermocouple>> 
heading "||"  (see the red circle in the image attached)
are considered as column separators and the table becomes:

| What?                                    | Date             | Rev. | TODO | Note        |   |         |      |          |
|------------------------------------------+------------------+------+------+-------------+---+---------+------+----------|
| * bugs in the table                      |                  |      |      |             |   |         |      |          |
| ** Temperature in four zones of the kiln |                  | R33  |      | kiln 1      |   |         |      |          |
| *** thermocouple:  <----                 |                  |      |      | ---T        |   | R1-0509 | DONE | at last! |
| *** COMMENT hello                        | [2009-06-18 gio] | R0   |      | Even me!!!! |   |         |      |          |

Is it my fault or is it a bug ?-)

2. Is it possible to exclude the heading with the COMMENT keyword from the 
   column view?

cheers,
Giovanni