Hi Rob,I had a similar issue a few days ago and I finally figured out how to fix it. I basically just recompiled apache2 but enabled proxy from the start, but I installed it to a different directory. For me it was:
./configure --prefix=/place/to/install --enable-mods-shared=most --enable-proxymak
Using Linux (CentOS 4.2)
Loaded the mod_proxy and proxy_util modules with the following:
/usr/local/apache2/bin/apxs -c -i mod_proxy.c
/usr/local/apache2/bin/apxs -c -i -n 'APACHE2' proxy_util.c
Edited the httpd.conf file by adding:
LoadModule proxy_module modules/mod_proxy.so
LoadModule