Have an HR20-100 (or -700... always forget). Have a recently new 1.5TB drive in there. Usually have < 5hrs of recordings since I delete when I watch. After the HD update, I go into the playlist and hit play on a recording and it sometimes takes 3 to 5 seconds to actually start playing. Just sits there doing god knows what. Is this a known issue? The box isn't overheating or anything and I replaced the fan when I replaced the hard drive.