Too often I don't think outfield players help their goalkeeper enough. It looks to me as if the goalkeeper doesn't see the ball until quite late. Blocking the view of the goalkeeper is of course sound tactics from the attacking team, but I can't for the life of me understand why the defending team let it happen as often as they do. On a corner of a cross defenders get away with murder almost all the time to get an advantage through blocking, holding, pulling and the like. Either goalkeepers don't communicate well enough that their vision is blocked, or outfield players aren't doing their jobs. Clearing opponents out of the way when the ball isn't even in play is no way all that hard, and I bet a majority of refs will totally let it go.
Now, if the goalkeeper sees the ball all the way and still can't make a save less than a meter to the side of him - yeah, that's a goalkeeping error for me. I don't care really that the ball is in the top corner in this instance either, because it wasn't a rocket shot. There is just no way, for me, that you should be able to beat the goalkeeper from that distance with a shot which is that close to him.