Version 2.3.3 is live on the Play Store.  This release improves performance by limiting rate download to only rates currently being displayed.  Some exchanges need a separate request for each rate pair, which can take time and end up causing a block by the exchange for excessive requests.  Now, the only rates which will be requested are those needed for the widgets, notification thresholds, and what is currently on the display if the application is in the foreground.