Arrow won't move on Minimap

[Shuddah]

On one character (this doesn't happen on other toons), the arrow that indicates my character on the minimap won't move, and thus the minimap won't scroll as I move towards a quest area or a quest turn in. If however I go into a building that causes the minimap to 'change', when I come out the map will scroll as I move, but only for a minute or so, then it stops scrolling as I move. I have deleted the WTF folder for this character. I have deleted cache files that I can think of. Any suggestions are appreciated.