Double messages!

I am trying to use the Cygwin to write my fuctions (postgresql).the problem is that I receive two times each message that produce my function (eg RAISE NOTICE "........").

If i use the pgadmin, this problem doesn t exist

Why?

Could You please help me?

 

Thank You In Advance

TGK

PS : Create Function ..... Returns Integer AS'

       Begin

       Raise Notice '\ OK '\;

       Return 0;

       End'

       language 'plpgsql';

 

Pg admin produces  :    OK

 

Cygwin produces:   OK

                             OK