I have European and US real time data through QuoteCentre. European data is no problem. However with the US data when I have a daily chart on my screen the prices do not update in real time. When I press the refresh data button the prices do however update in real time although the lower timescale (30 minute and 10 minute) charts do not update and just show yesterday's prices. I have subscribed to both the NYSE and NASDAQ exchanges so can someone tell me what the problem is? The only slighly abnormal issue with my trading is that my timezone and hence computer time does not correspond with the US markets but that is the only issue I can think of.