apache proxy error

一 系统：
Os:Redhat as 4U5  2.6.9-55.ELsmp_64bit
Apache:Apache/2.2.4 (Unix)
#more /usr/local/apache2/build/config.nice
#! /bin/sh
#
# Created by configure

"./configure" \
"--prefix=/usr/local/apache2" \
"--enable-mods-shared=most" \
"--enable-proxy" \
"$@"
代理服务器后端是tomcat。
二 apache 错误：
[Wed Oct 29 20:36:49 2008] [error] [client 10.75.52.25] Handler for proxy-server returned invalid result code 70007
[Wed Oct 29 21:35:21 2008] [error] [client 10.43.6.65] proxy: error reading status line from remote server x.x.x.x
[Wed Oct 29 21:35:21 2008] [error] [client 10.43.6.65] proxy: Error reading from remote server returned by x.x.x.x


希望能得到您的帮助，谢谢！