Request not set to radius server Urgent :(

Hi,

I have a strange problem. I have setup a hotspot that was authenticating against a radius server. It was working fine until I added the rules from this link http://wiki.mikrotik.com/wiki/Protecting_your_customers

I have removed the rules but I am still getting this error 01:10:59 hotspot,info,debug 00:13:02:D6:6C:DF (10.5.50.249): login failed:
RADIUS server is not responding
The radius server is up and running. I do not see any requests hitting the radius server from the router. It is a though the router is not sending the requests. Please could someone help …I have 50 users screaming at the moment and I can’t find the problem. I ran torch and it also didn’t show and request for port 1812 or 1813

Thanks Mark