Accents and postgresql

Hi everybody ! I've got a quite confusing problem : Yesterday, I upgraded my postgresql server from 7.0.3 to 7.1. I did some pg_dumps and created the DBS on the new server. Everything went fine. But now, I've got some problems : When accessed through php, *sometimes* characters with accents don't come out right. I did some testing and the results are here : -psql doesn't have this problem, so I think it is not a postgresql related thing. -When the database is created with a UNICODE encoding, accentuated characters appears as (xx). With a SQL_ANSII encoding, accentuated characters come out as other letters. phpPgAdmin also has this problem, as well as all the websites I have written. Has anybody else had this problem, or does someone sees where I could watch further, I'm quite stuck ? Thanks a lot for your replies. Florian Blaser