agent status gives a lot of errors

[askmurphy]

I am trying to monitor one of my servers, connection seems to be ok but I get a lot of errors:

WDH Host information was changed on WDH
WDH Version of zabbix_agent(d) was changed on WDH
Acknowledge (2) WDH News (NNTP) server is down on WDH
Acknowledge (2) WDH Apache is not running on WDH
Acknowledge (2) WDH Sshd is not running on WDH
Acknowledge (2) WDH SSH server is down on WDH
Acknowledge (2) WDH Syslogd is not running on WDH
Acknowledge (2) WDH Mysql is not running on WDH
Acknowledge (2) WDH Inetd is not running on WDH
Acknowledge (2) WDH Zabbix_server is not running on WDH

The last line, zabbix server is not running, is correct, only a zabbix agent is installed on this system.

Any idea what's wrong ?

Any help would be nice !