Hey guys I just purchased a Panasonic TH50PX50U Plasma. I was wondering if there is anything special to do during the 100 hour break in period besides keeping the picture and brightness levels down. Also I have the tv connected to a comcast HD DVR and for some reason cannot change the aspect of SD channels to 16:9 whereas I could change when I originially just plugged the cable from the wall to the TV w/o the box. Last but not least how do I setup the sleep timer? I goto the menu and select Timer and all the options are grayed out, and I've already setup the clock. So if you kind people could help with any of these issues I would greatly appreciate it.