My ganglia worked very well until last weekend. After I rebooted computer, I even cannot started internet. Using command "/etc/rc.d/init.d/httpd start" looks ok but etc/rc.d/init.d/httpd status showed httpd dead but subsys locked and /var/log/httpd/error_log shows that Address already in use: make_sock: could not bind to port 80. I have 2 NICs and that may caused the problem but I don't how to solved the problem. Thanks.
