Sorry. I'm compairing USD to GBP as if they are the same currency, ofc 1USD ≠ 1GBP, ty for the correction, it explains why they appeared to be different when comparing them on the charts.
Also, as previously mentioned I really like Intersango and also use there own market price for market price, things just don't sell well there, they just sit the que forever. This is probbably due to the difference in depth, come and buy my GBP please. This would take a few seconds on Gox, not a few weeks.
If I could buy BTC from Intersango then I could just transfer them easily, but I have GBP on Intersango instead, which wouldn't be an issue on Gox or Bitcoinica, but here I can't do anything with them.
liquidity on intersango is low. I bought bitcoins there in the EUR market about 2 weeks ago.
I payed a slightly higher price and had to wait longer than I'd have had to wait on mtgox, but in the end I got what I wanted and I might've gotten it both cheaper and faster (because german bank -> EUR/USD -> mtgox hong kong bank costs both time and money.
So I suggest to be patient, put orders and re-adjust them once a big movement happens on mtgox.
If everyone runs from the place, it will never reach good liquidity and we desperately need more functioning exchanges as many point out.