If you see a lot of connection from 127.0.0.1, like:
127.0.0.1 - - [26/Feb/2013:16:00:58 +0800] "OPTIONS * HTTP/1.0" 200 -
127.0.0.1 - - [26/Feb/2013:16:00:59 +0800] "OPTIONS * HTTP/1.0" 200 -
127.0.0.1 - - [26/Feb/2013:16:01:00 +0800] "OPTIONS * HTTP/1.0" 200 -
This is probably Apache (assuming this is what you use) polling child processes. This is perfectly harmless. But yes, it's annoying.
To get rid of it, add a SetEnvIf in your httpd.conf, e.g.:
SetEnvIf Remote_Addr "127\.0\.0\.1" loopback
CustomLog logs/access_log combined env=!loopback
If you use a control panel like cPanel, you might need to go through extra steps to make sure the configuration sticks. In the case of cPanel, you'll need to run the distiller, i.e.: apache_conf_distiller --update
Be sure to cat access_log|tail -n10 (or something like that) to make sure that the SetEnvIf is working. Hope this helps.