Apache Proxy

Hi!

I'm using apache with ProxyPass and ProxyPassReverse as a frontend server, this server redirects the requests to my backend web servers, i currently have 3 sites online and working partly with this proxy setup, however i can't upload any files to the sites.

example:

First server = srv1.example.com -proxy gets request and passes it to the correct internal server. eg. "10.0.0.1:8080"

Second server = srv2.example.com - proxy gets request and passes it to the correct internal server. eg. "10.0.0.2:8081"


This allows me to run multiple servers on one single IP and external port (80). without using "virualhost" and overloading one server with too many websites.

problem is as i said, the upload "functions" on the sites do NOT work behind the proxy, tried the exact same sites without proxy and everything is ok.

How can i get the proxy configured to allow/support this ?

the sites i'm running is:

1-Wordpress
2-phpBB
3-phpBB



(sorry for bad bad English)

Hope someone can help! =)