I am using a cisco modem. The ping is constantly at a 1000 level for some reason. The green light of power, DS, US, online and link is solid on the modem. Ethernet 4 is flashing, and setup is dull but lighted. I have tried to unplug the power or reset the modem. The light doesn't change. Only that for the first couple of minutes the modem is online, the ping is normal(around 50 ms), then after that, the ping rises to about 1000 again. BTW, the download speed is pretty normal. I have no idea what's going on. I would appreciate some help.