I found that I always have a high ping with my router (300-2000ms). When I release the DHCP, it go back to normal (<1ms - 2ms). But when I renew the DHCP, high ping come back. Then I tried to clear the nvram, and now it come back to normal. But I believe that the problem will come back very soon (i have this issue before) So I would like to ask...is it the router's problem or the firmware's problem? I am using Thibor 15c I just bought this router for 4 months... Thanks very much.