Scenario:

1) You look at some graph or a screen for a certain timeframe by moving the bar in the bottom.
2) You move the bar back all the way to the right to see the most recent data
3) You expect the graph or screen to keep updating with the current time and data, but this does not happen.

Possible fix:

Remove &stime=201004270345&period=28800 from the URL when the bar in the bottom is moved all the way to the right to view current data.