What is wrong with the MT4 exposure graph?

[Dean Thomas Whittingham]

My account is based in AUD so I am assuming this has something to do with it

I have noticed that right from the start of opening and trading my account in MT4, when I click on the exposure tab in MT4, the graph always shows a huge exposure to AUD even when I have zero positions open involving the AUD. By the way, this only happens when I click on 'Long Positions' even if I am net short the AUD. 

Also the volume (as a +) is always the highest for the AUD even if I have zero positions. 

any ideas?