Woodway Treadmill: 51 minutes, 3.0 miles, 3.5 mph, HR=125. Stamina L3 was too fast and too flat. My Dell Precision M4400 keeps locking up. The only resolution is to force a restart by holding the power button. I believe it’s a conflict between the Symantec Corporate Client that Rent-A-Geek installed on Thursday and Windows Defender. It worked fine at home all weekend when I was not attached to the network.