There are a few possible reasons:<br><br>1) The packet size could be different and that different packet size in Ping Plotter may be causing some packet loss. Note that this is a problem with the router, not Ping Plotter, but you can change the packet size to something smaller than default to see if this affects it.<br><br>2) Having multiple simultaneous outstanding ICMP echo requests may be causing a problem in one of the routers. This isn't too uncommon, but is almost always traced back to a hub on your local side (bios updates often help this). See the instructions here <A HREF="http://www.pingplotter.com/netgear-rt314.html" target="_new">http://www.pingplotter.com/netgear-rt314.html</A> (follow the instructions in the workaround section) if you want to make Ping Plotter only do one outstanding request at a time.<br><br>Ping Plotter actually uses the exact same ICMP engine that PING does (the ICMP.DLL provided with Windows), so you should be getting the same results if the tests are exactly the same.<br><br>