none of the firmwares had a working scroll bar. they had it where it would show up when you were scrolling to see where you are, but you can't use it to scroll at all. it's like useless being there.
if you know where you should be, i would just use opera in overview mode, flick to some area you think you need to be, then zoom in to where you think you should be and go from there. that way you're not flicking forever.