I have had a hd tv for nearly 12 months now and what I have noticed that if I am watching it for a length of time ie football match,film or documentary I start to get a minor headache ...then I started watching tv without the hd and all appeared ok but the last couple of weeks been watching in hd again and headaches started to come back, I am not sure if its a coincidence or wether its watching hd thats causing them...I will monitor again for the next few months watching with and without hd to see if it returns ....just wondering if anyone has heard of this or had similar problems