Problems of Radius service

Now, I have 3 problems about freeradius in my radius server 1. If I enter service radiusd reload command in linux than freeradius process dead. 2. Sometime, I enter radtest command than no response from service (process was running in that time) 3. After I install mod_auth_radius to apache and configure complete but apache can't connect radius. ** Note I use Linux Fedora Core 6, Apache 2.2.4 and freeradius 1.1.7-3