Originally Posted by TAsunder
If it were a stuck button it should be happening constantly and predictably. The problem goes away on its own. It could be someone nearby I guess but the neighbors are not that close and it's in a basement room with minimal windows.
Can you set that Harmony to do different TiVo remote addresses, like you can with a slide switch TiVo remote?
Try setting it to an address other than 0.
Then if it happens again, go into the system information screen and see if it's still set on the address you chose or if it's been reset to 0.
If so, someone else's TiVo remote signals are getting to it somehow.