backslashes in queries containing LIKE

Hi,

We have a problem with backslashes in queries containing LIKE.

insert into table (field) values ('IM\\test')
select * from table where field = 'IM\\test'

returns one record

select * from table where field LIKE 'IM\\%'

returns no record

Why is postgres behaves like that ?
Can someone help us ?

Scripts for testing purpose have been attached.

Mickael Faivre-Macon.