Socket connection not closing

I have a socket application written a few years ago in PHP which receives information and does something (not relevant at the moment). The program that connects is written in PHP with PEARs Net_Socket. This socket is really taken from the socket example in the PHP docs. It's been working OK for quite some time, but today I tried it out on my development machine and I'm experiencing some problems with the network connection not closing: # lsof -i :9100 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME printSock 5309 root 3u IPv4 21732 0t0 TCP bugs.unl.edu.ar:9100 (LISTEN) printSock 5309 root 4u IPv4 26834 0t0 TCP bugs.unl.edu.ar:9100->inti.unl.edu.ar:37825 (CLOSE_WAIT) sh 8077 root 3u IPv4 21732 0t0 TCP bugs.unl.edu.ar:9100 (LISTEN) sh 8077 root 4u IPv4 26834 0t0 TCP bugs.unl.edu.ar:9100->inti.unl.edu.ar:37825 (CLOSE_WAIT) I sent the disconnect() from Net_Socket, and even set the connection to not be persistent (just in case), but I can't get the connection to close. Any ideas on what can be wrong? As I said before, this socket application is working OK on other machines. -- Martín Marqués select 'martin.marques' || '@' || 'gmail.com' DBA, Programador, Administrador