Apache/httpd errors

Question

I've enabled my webserver, it works publicly and privately. I use the default (what I'll call master directory), /Library/WebServer/Documents -- I do not use the ~user.
I cleared out all of the documents in /Library/WebServer/Documents and put a single .zip file in there (a WoW modpack I make for my guild/friends). Everything works, the file can be downloaded, etc...however, my access_log and error_log are filling up with odd errors I cannot seem to explain/get rid of.
Examples:
error_log
[Tue Nov 11 21:20:23 2008] [error] [client 172.16.17.1] File does not exist: /Library/WebServer/Documents/favicon.ico
[Tue Nov 11 21:20:24 2008] [error] [client 127.0.0.1] File does not exist: /Library/WebServer/Documents/checkurl
[Tue Nov 11 21:20:26 2008] [error] [client 172.16.17.1] File does not exist: /Library/WebServer/Documents/favicon.ico
[Tue Nov 11 21:21:59 2008] [error] [client 127.0.0.1] File does not exist: /Library/WebServer/Documents/checkurl
[Tue Nov 11 21:22:10 2008] [error] [client 127.0.0.1] File does not exist: /Library/WebServer/Documents/checkurl
access_log (these seem to match the above, so I'm guessing they are some sort of hash)
127.0.0.1 - - [11/Nov/2008:21:29:28 -0600] "GET /checkurl/aHR0cDovL2Rpc2N1c3Npb25zLmFwcGxlLmNvbS9zZWFyY2guanNwYT90aHJlYWRJRD0%3 D HTTP/1.1" 404 275
127.0.0.1 - - [11/Nov/2008:21:29:31 -0600] "GET /checkurl/aHR0cDovL2Rpc2N1c3Npb25zLmFwcGxlLmNvbS9pbmRleC5qc3BhP2NhdGVnb3J5SUQ9M Q%3D%3D HTTP/1.1" 404 279
127.0.0.1 - - [11/Nov/2008:21:29:32 -0600] "GET /checkurl/aHR0cDovL2Rpc2N1c3Npb25zLmFwcGxlLmNvbS9jYXRlZ29yeS5qc3BhP2NhdGVnb3J5S UQ9MjM1 HTTP/1.1" 404 283
127.0.0.1 - - [11/Nov/2008:21:29:34 -0600] "GET /checkurl/aHR0cDovL2Rpc2N1c3Npb25zLmFwcGxlLmNvbS9mb3J1bS5qc3BhP2ZvcnVtSUQ9MTIyM g%3D%3D HTTP/1.1" 404 279
I do not know what checkurl or favicon.ico are, I cannot find them anywhere, they never existed in the directory before I cleared it out, either.
These errors go on endlessly and fill up my logs...I'm looking for a way to prevent this/put a stop to it. If anyone can assist me, please do!
Thank you for your help!
iMAC/OSX10.5.5

Answer 1

y2hPOD,
I'm not familiar with the checkurl error, but I noticed from your log snippet that the errors are generated by the same client: 127.0.0.1, i.e. localhost. The server itself is generating the error. There may be a server configuration or page coding issue you can resolve there. Other logs in the console may help you track this down. Good luck.
If you haven't already, make a favicon and drop it in the path the error is looking for it. That's what I did. (You may note that these errors are also consistently generated by a different client.)
J