CLOSE_WAIT - Closing connections to Postgresql database

Hi, I'm using non-persistent connections in a page which is accessed by a client once a second( yes once a second) for about 12 hours. Doing a netstat -apn|grep 5432|grep httpd a see that the php doesn't close the connection, in fact the connection is in CLOSE_WAIT state. I have tried to let the php to close the connection, but also I have explicitely close it but the result is the same : the database will no longer accept connections because the number of allowed clients is reached. Anybody has any ideea ? I know that I should use persistent connections but I want to know if this is a bug or I'm missing something. I'a running php 4.0.3pl1 on a RH 6.2 box with apache 1.3.14. Ovidiu