Hi. I've set up my E4200 with toastmans build and i'm using it for IPTV but i encountered and issue when using multiple multicast sources and i dont seem to get over the problem. When i add the 4th muticast source simultaneously the router simply stops responding , everything on the LAN/WAN stops, devices on the lan cannot communicate with each other until i close one of the sources and then everything returns to normal , no reboot required , no message in the log , nothing. Each source has between 300k and 8 MB, and it doenst seem to be a resources issue because when im using 3 multicast sources the CPU Usage is 24.01% and the memory is 76% free.. My ISP uses 2 vlan's and im actually running the IPTV in a separate VLAN with igmpproxy acting only on that vlan, internet traffic goes through a different vlan. Is there some limitation for the number of multicast sources? If 4 was the limit it would'nt be an issue because my ISP only grants 5 simultaneously! Can anyone help me to debug this issue? You can see how it works using this link: http://zipleen.blogspot.pt/2010/10/howto-setup-netgear-3500l-using-tomato.html Note: i've tried with EMF enabled and disabled and it makes no difference.