I have this machine, so far very pleased....except I am having problems with DVD-RW discs. I have tried both Memorex and TDK brand discs, with both it seems to lock up and take forever to respond to either remote commands or buttons on the unit itself. I eventually have to eject the disc. It won't even give me the on-screen menus. However, DVD-R & DVD films work fine. Is it the media I'm using or has anyone else had this problem? I wanted to use the DVD-RW for use like a video. i.e repeated recordings off Sky and the like. Any ideas?