apache log errors

[ijk]

I keep getting these errors on apache.

[Thu Jul 10 10:18:56 2008] [error] [client myipaddress] File does not exist: /path to/error, referer: http://www.mywebsite.com/index.php

erro level in apache config is set to Notice.
I am not accessing error just visiting mywebsite.com . when the above errors occur.
These file donot exist on the server.
Checked all the php files and none of them are calling for a file called error .
Have a .htaccess file that blocks alot of unwanted ipaddresses. Even the ipaddresses blocked by .htacces file try to access the /pathto/error .
.htaccess file has no custom error documents extra.

any ideas as to why this is happening thanks