I made a topic on U Hall a while ago (which I can't find now) explaining how people hit you from off screen. But it only included a couple screenshots and you couldn't really see its effect in-game. In an effort to better explain to our guild members why this happens, I went a step further and made a split-screen video. It shows what two different characters see chasing each other. At some points, one player sees no one on screen while the other is only a couple tiles behind. http://www.veoh.com/videos/v16357129Z6M2RSYa Pause the video at various points and compare what one character sees to the other. This effect is even more pronounced if you are playing with the 640x480 game window (both clients are 800x600 resolution). The lesson here is if your target is running you don't know where they are. Just an approximation. This is something all MMOs suffer from to certain degrees and at this time is impossible to fix, only mitigate.