User_manager Radius timeout

Hi All

I have upgrated to v5.5 on RB433AH. I Use UM and Natting is set to srcnat masquerade. This settings used to work but now I get Radius timeout on the RB433AH. When I disable the NAT setting then the users can connect but not browse the internet.

Does anybody know of a solution or work around for this.

Please help
Regards

Hi
Please Send ip firewall nat export and ip address export.