DROP COLUMN really work?

Hi all,

isbs=# select version();
version
-------------------------------------------------------------------
PostgreSQL 7.3 on i386-unknown-freebsd4.7, compiled by GCC 2.95.4
(1 row)

isbs=# create table abba (x int4, y int4);
CREATE TABLE
isbs=# \d abba
Table "abba"
Column | Type | Modifiers
--------+---------+-----------
x | integer |
y | integer |

isbs=# alter table abba drop column x;
ALTER TABLE
isbs=# \d abba
Table "abba"
Column | Type | Modifiers
------------------------------+---------+-----------
........pg.dropped.1........ | integer |
y | integer |

Why the first column not really deleted from table? How to make it work?
I tries using VACUUM FULL abba, but this didn't help. Thanks a lot for comments.

P.S. btw, I upgrade my DBs from 7.2.1 to 7.3 version without any problems, but
found, that psql's help messages (\h, \h alter table etc.) not from 7.3
version. For example, it do not contain \h CREATE SCHEMA help message.

--
best regards,
Ruslan A Dautkhanov rusland(at)scn(dot)ru