Weird problem - possibly a bug.

I have a single row table that I use to hold various data, this table is only
ever updated by my programs, none of them ever do an insert ( I set the
values initially using psql.  I have not had cause to look in the table until
today when a client notified me of a database error occuring in one of my
programs.

The table had 4 rows, all with the same OID. ( It is only supposed to have 1
!!)

admin=# select oid,* from control;
  oid  | next_client | next_dialin | next_domain | next_invnum | next_rctnum
| next_creditcard | open_period | rebuild_mail_config | rebuild_http_config
-------+-------------+-------------+-------------+-------------+-------------+-----------------+-----
--------+---------------------+---------------------
 37238 |       10285 |        1032 |       10288 |     1011804 |     2011237
|             141 | 200112      | f                   | f
 37238 |       10285 |        1032 |       10288 |     1011804 |     2011237
|             141 | 200112      | f                   | f
 37238 |       10285 |        1032 |       10288 |     1011804 |     2011251
|             141 | 200112      | f                   | f
 37238 |       10285 |        1032 |       10288 |     1011804 |     2011251
|             141 | 200112      | f                   | f
(4 rows)

It would appear that on a number of occassions, something has gone wrong. I
am using 7.1.3 on RH7.1

Finding these extra rows, with duplicate oids has destroyed my faith in the
integrity of the rest of this and other databases.

Comments appreciated.
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Glen and Rosanne Eustace,
GodZone Internet Services, a division of AGRE Enterprises Ltd.,
P.O. Box 8020, Palmerston North, New Zealand 5301
Ph/Fax: +64 6 357 8168, Mob: +64 21 424 015