anomalies between charts

I have the latest version of metatrader installed, using Interbank as the broker. It is only a demo account.

Sometimes when viewing prices on different charts they are wildly different. For instance, on my gbp/Jpy chart I am shown a bid price of 239.33 on all time frames except the 1 hr one, where it seems price is stuck at 238.10.

Any ideas why this should happen?

lack of chart data. ,.

however when I went to work today all seemed normal. It'a the only chart running and its been running all day. I just recalculated all time frames so the problem is now fixed but I'm a bit concerned lest It should happen again and I click on a market order without looking at the quote price, just the one on the chart.

why would up to the minute data automatically change all but one timeframe?

Sounds like you need to reinstall mt4