when I did a netstat -an in my obsd 2.8 box, I found out several connections in close_wait state. i know that this state is normal but mine is weird since it doesn't go away. qmail-smtpd freezes because of this. kill -HUP doesn't solve the problem but even if it does, I think it's not practical to do it every few hours. The only thing that solves this problem in my case right now is reboot. any ideas?