Catalin,
> thanks for yours advices.
> i will upgrade to postgresql 7.2.3 asap
> and see if there are improvments !
Um, that's 7.2.4. 7.2.3 has a couple of bugs in it.
Also, you are going to have to edit your postgresql.conf file per the
suggestions already made on this list.
--
Josh Berkus
Aglio Database Solutions
San Francisco