My DCS 8100 is always going off line. At first I thought it was due to issues with the wifi, but after much troubleshooting, have isolated it to the camera. I was away for two weeks, and it went off line the day I went away. With no intervention it came back on a week later. Then after three days it went offline again. When I got back, I turned the camera off and tried to reboot and did not come back on line. Five hours later - bam - it just came back on line. Does anyone know what is causing this? Thanks K