Like seems to fail !

Hello,

I have a strange problem with 'like' behaviour
when I upgrade from 6.5 to 7.0

Here is my table :

create table persistent_config (
key varchar primary key,
type varchar(12),
value varchar not null
)

and its content :

base=# select * from persistent_config;
key | type | value
------------+------+--------------
/test/info | | avalue
/try/info | | avalue
/test/key | | changedvalue
(3 rows)

And I try this 'like' command in psql :

base=# select * from persistent_config where key like '/test%';
key | type | value
------------+------+--------------
/test/info | | avalue
/test/key | | changedvalue
(2 rows)

Result is ok !

By now, this other one :

base=# select * from persistent_config where key like '/%';
key | type | value
-----+------+-------
(0 rows)

There is really something wrong ! All current content should have been
returned. Is '/' caracter a new 'escape' caracter since version 6.5
In fact, my query was working well on postgresql 6.5 and since I upgraded
to 7.0, this simple command failed.
Is it a bug, or I missed something ?

Regards,

--
Yves Martin
yma, Lausanne