mod_jk 사용시 에러로그

mod_jk.so를 이용하여 아파치와 톰캣 사이의 통신을 하고 있습니다. 그런데..
tomcat/logs/mod_jk.log 에 에러로그가 무지 많이 쌓이고 있습니다. 무엇이 잘
못 되었을까요?

기타 설정파일(tomcat - server.xml, apache - httpd.conf)은 기본설정값입니
다.

에러로그는 다음과 같습니다.
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[jk_ajp12_worker.c (601)] ajpv12_handle_response, error writing back to
server
[jk_ajp12_worker.c (601)] ajpv12_handle_response, error writing back to
server
[jk_uri_worker_map.c (335)] jk_uri_worker_map_turi_worker_map_close,
NULL parameter
[jk_uri_worker_map.c (185)] In
jk_uri_worker_map_turi_worker_map_free, NULL parameters
[jk_ajp12_worker.c (601)] ajpv12_handle_response, error writing back to
server
[jk_connect.c (143)] jk_open_socket, connect() failed errno = 111
[jk_ajp12_worker.c (152)] In jk_endpoint_tservice, Error sd = -1
[jk_connect.c (143)] jk_open_socket, connect() failed errno = 111
[jk_ajp12_worker.c (152)] In jk_endpoint_tservice, Error sd = -1
[jk_ajp12_worker.c (601)] ajpv12_handle_response, error writing back to
server
[jk_ajp12_worker.c (601)] ajpv12_handle_response, error writing back to
server
[jk_ajp12_worker.c (601)] ajpv12_handle_response, error writing back to
server
[jk_connect.c (143)] jk_open_socket, connect() failed errno = 111
[jk_ajp12_worker.c (152)] In jk_endpoint_tservice, Error sd = -1
[jk_ajp12_worker.c (601)] ajpv12_handle_response, error writing back to
server
[jk_ajp12_worker.c (601)] ajpv12_handle_response, error writing back to
server
[jk_ajp12_worker.c (601)] ajpv12_handle_response, error writing back to
server

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