You were probably looking for the security->firewall forum, you somehow ended up in the Wireless security forums. However, at a glance that address is an automatic private IP address. All that that means is that a client failed to get a DHCP address, and is trying work around it. A good description is at:
http://compnetworking.about.com/cs/protocolsdhcp/g/bldef_apipa.htm
The error you got is because the firewall knows that APIPA addresses are not valid on it's interface. I would not be concerned about this for security reasons, but you may need to figure out what client is not working.
