QGraphicsView/Item Tiling Problem

[tomf]

Hi,
I'm trying to display the map of the world using graphics items with the graphics view. Since my world map consists of many images I'm getting some wired "grid lines" between the items which shouldn't be there. All my items coordinates are next to each other.

I have attached a picture of what I mean.

Antialiasing is disabled, and I also tried to set the QGraphicsView:ontAdjustForAntialiasing flag - without success.

Any ideas?