I'm using Nginx 0.7.66 with upstream hash-0.3 on Ubuntu 8.04.3 LTS.

My config cmd:
./configure \
--prefix=/usr \
--sbin-path=/usr/sbin/nginx \
--conf-path=/etc/nginx/nginx.conf \
--error-log-path=/var/log/nginx/error.log \
--pid-path=/var/run/nginx.pid \
--lock-path=/var/lock/nginx.lock \
--user=www-data \
--group=www-data \
--with-http_gzip_static_module \
--with-http_realip_module \
--http-log-path=/var/log/nginx/access.log \
--http-client-body-temp-path=/var/tmp/nginx/client/ \
--http-proxy-temp-path=/var/tmp/nginx/proxy/ \
--http-fastcgi-temp-path=/var/tmp/nginx/fcgi/ \
--add-module=../nginx_upstream_hash-0.3.1/