lack in psql console

Hello

I have a problem in my psql console (psql 8.2.5 on Mac 10.5.6), the problem
is, when I write a sentence and then I use the up and down key to see the
previous sentences the sentence is loaded above the previous sentences and I
should use the left and rigth keys to go to the begining of the sentences
and then go to the end to be able to see the complete sentence.

Welcome to psql 8.2.5 (server 8.2.9), the PostgreSQL interactive terminal.

Type: \copyright for distribution terms
\h for help with SQL commands
\? for help with psql commands
\g or terminate with semicolon to execute query
\q to quit

=> select * from table_name;

In this sentence I was use the up key to load the previous sentece and this
is what I see.

=> select * from \d summary_table;

The sentense start after "=> select * from" I don't know why this is
happend.

Thanks for all help you can provide me!

Best regard,

--
Life may only be understood backwards.... but it must be lived forwards