cannot use port 80 in oas

I've installed Redhat 6.0 and Oracle 8i on a clean machine. When I install OAS 4.0.7 I cannot use port 80 as the www listener. When I do set it to 80 it cannot start the www listener. when I set it on 81 it works. Does anyone know what might cause this. I haven't installed anything on port 80. When I try to run plsql cartridges on port 81 it hangs (keeps searching all weekend without finding anything). So I guess we need the default port 80. Can anyone help us?

Regards,

Stéphane D'Hoedt & Wim Valgaeren
www.cereusbe.cjb.net Received on Mon Dec 06 1999 - 08:31:44 CST