Using Blue Iris V4.0 with several cameras. Had my Foscam FI9821W V2 operating for about 5 months. I updated the firmware several months ago to 2.11.1.18. Yesterday the camera suddenly started to pan, tilt on its own. I have re-booted and re-set the PTZ from within the Foscam IPCam Client and have given it a "home" setting for its default. But after 5 minutes or so it pans, tilts on its own and stops, never in the same place. Also, when I unplug and plug in the camera from its wireless source it waits several moments then goes through the boot tilt, pan sequence, normally. The camera seems to be operating well except for the sudden random pan and tilt. I have not re-loaded the firmware or re-set to factory, yet. Any hints? Thanks.