Ubuntu 10.04 server + Airtime not work

1.
nano /etc/apt/sources.list
For Ubuntu Lucid servers, use the Sourcefabric repository:

deb http://apt.sourcefabric.org/ lucid main

2. Install the Sourcefabric package signing key:

$ sudo apt-get update
$ sudo apt-get install sourcefabric-keyring
3. Install the database management system:

$ sudo apt-get install postgresql
4. Install the streaming media server (optional):

$ sudo apt-get install icecast2
5. Remove PulseAudio:

$ sudo apt-get purge pulseaudio
6. Install Airtime:

$ sudo apt-get install airtime

CPU = Intel(R) Xeon(R) CPU E5507 @ 2.27GHz
Total RAM = 1048576 kB
Free RAM = 677876 kB
OS = Ubuntu 10.04 LTS Intel 80386
AIRTIME_CONFIG_FILES = OK
POSTGRESQL_DATABASE = OK
PYTHON_KOMBU_VERSION = 1.2.1
PYTHON_POSTER_VERSION = 0.8.1
RABBITMQ_SERVER = OK
AIRTIME_VERSION_URL = http://localhost:80/api/version/api_key/%%api_key%%
APACHE_CONFIGURED = YES
AIRTIME_VERSION = Could not contact server
PLAYOUT_ENGINE_PROCESS_ID = FAILED
PLAYOUT_ENGINE_RUNNING_SECONDS = FAILED
LIQUIDSOAP_PROCESS_ID = FAILED
LIQUIDSOAP_RUNNING_SECONDS = FAILED
ICECAST_PROCESS_ID = FAILED

what's the problem?
Please help me configure Airtime.