Has anyone else experience lock up issues with their unit....The unit doesn't lock up but i can't fast forward, skip a scene, pause or stop. The only thing that works is the power button on the remote and its a 45 second delay when i push that.......Also this seem to only be an issue after unit has been playing video for about 5 mins are so....The unit is also plug in via wireline not wireless......Any help or direction would be great.... Thanks