Weird issue on my sites recently. I have one VPS account with Plesk and the ports all get locked in a ‘CLOSE_WAIT’ state. Using ‘netstat -p” shows its usually httpd locking them up. Restarting VPS will get the ports unlocked but in investigation I found restarting Apache from the Unix command line does the trick to.

Anyone have any experience with this type of issue and how to fix it?