Purchased the Pioneer 435XDE a few months back, very happy with it, but have one small problem. Approximately once a week, after turning the Pioneer on, in the digital tv mode a blank screen appears, when I flick over to analogue there is a picture, no problems, but when i flick back to digital, I am greeted with the installation screen for DTV setup. So I follow through and carry out the installation and it is fine again, although sometimes I have to do it twice, because not all channels installed correctly (i.e one or two may have had some large scale distortion the first time around). After completing the installation there are no problems with the panel, until approximately another week. I am mistified how the media receiver can just loose all the channel information downloaded, because i certainly have not deleted it. I have a new aerial on the roof, could that need realligning? I was wondering whether that might be the reason behind the channel distortion? What do you think?