Telldus Live, many vent.ItemStateChangedEvent

I use org.openhab.binding.tellstick-2.4.0-SNAPSHOT for a Telldus Live on openHAB 2.5.4-1. I have used for a year and its works OK but I get between 10 and almost 100 vent.ItemStateChangedEvent for each event, switches, sensors everything…

Is that normal?
If not normal, any suggestion what to do?

/ David