Some time ago, I enabled 'wobble' but complained that I couldn't see it doing anything. To date, I have watched only ever used the 16:9 mode! Tonight I watched a DVD and found that it wasn't anamorphic and was forced to watch it in 'zoom' mode. After a few minutes, I noticed that the picture was off centre and was quite near the top of the screen. After cycling through the 'aspect' back to zoom, it was back in the centre again. But a while later, I noticed that it was now near the bottom. Again, I cycled through the aspect and got it back. I then studied the picture closely and you can clearly see that the picture 'jumps' 1 pixel and noted that it did this every 30 seconds. I turned off 'wobble' and it stopped. I actually expected wobble functio to move the picture a few pixels in each direction but leaving it such that the picture sayed roughly in the same position. But what it does is mad.. The picture actually moves several inches.. Like I said, I have never seen it do this in '16:9' mode so I am wondering if this is actually a bug in the way that 'wobble' works when in 'zoom' mode.