Hi George.<br><br>I'd be interested in any more details you have here. I run Ping Plotter continuously (24 hours a day), and get 50,000 samples in memory (I usually cut off my max samples at 50K). What kind of trace interval do you use? Does it seem like it gets slow at the same number of samples taken? Do you think it depends on lost packets in any way?<br><br>I'm guessing you're using Windows 98 when you see this happen. I'll set up my Win98 machine doing some long-term testing to see if I can reproduce some of this.<br><br>