Apache2 issue on Ubuntu 8.04

[John]

I wanted to see if someone could point me in the right direction as I cannot figure what's going wrong with my config. I have apache2 running on my ubuntu PC. On another PC, when I enter the IP address of the Ubuntu PC on the network in firefox I get the Apache It works page and the IP is displayed in the address bar. For example, http://192.168.0.5/. I've also added an index.php to the root directory. On another PC on the network, when I enter http://192.168.0.5/index.php I get redirected to http://localhost/index.php and since I'm not on the localhost I get a not found error. Does anyone know how to turn off this redirect so when I enter http://192.168.0.5/index.php it goes to there instead of localhost. If I'm on the Ubuntu PC and I enter http://192.168.0.5/index.php, it also redirects to localhost but the index.php file does work.

I have another PC running Fedora 8 with apache and it doesn't do this.

I'm stumped.