I am having an issue on live tv where it locks up and says "you must lock channels to view this category"......sometimes it freezes up, and sometimes all the channel categories disappear except for locked channels and favorites folder. In clicking on locked channel folder nothing happens......the only way I have found to restore live tv function is to factory reset.....Has anyone seen this? Has anyone uncovered why this happens?? Thanks so much in advance and sorry for popping in during ongoing discussions of other issues......