I am also running pingplotter continuously on XP, trying to nail down a problem with my ISP. Lately, I notice that when I get a period where the connect dropps all packets (the lower bar is all red) and I double click on the lower graph to look at that data, it will give me a memory error in XP and then not show the lower graph any more. <br><br>I have seen in the past using pingplotter where you will sometimes get routers that seem to go into a continuous loop, where 2 routers will direct that packet baack and forth to each other and the top graph will expand way down the screen. I think this is what is happening, but I am not sure cause it gives me that error and does not display the proper data in the upper graph, nor any data in the lower graph.<br><br>I find I have to save the sample set and reload it. Then I can see the lower graph again. But if I click on the bad section of the lower graph it will do it again. <br><br>Hear of this yet? <br><br>