Since upgrading to 6.2 my box has developed a problem. I'm in the Boston area. I used to get 44.1-4 fine but now the box says there is no signal present on all 4 channels. If I go into the installer menu and scan it no longer finds them but when I look at the signal quality on any of these channels it says it's 98. When I first loaded 6.2 it worked for awhile but now it's dead. The signal quality and strength have not changed. Rescanning consistently misses those 4 channels. Others in this area have replied that they still get the channels so it's not likely to be a PSIP problem here. Tried rebooting the box and rescanning. Nothing helps. Any ideas??