Ok, thank you marcel,
indeed I search a lot and I read also very old posts hopping can help me, bet till now nothing.
Have you something to suggest based on your experience that I can try to make it my system work properly or add clues for a trubleshooting test ?
Thank you so much.
EDIT:
I solved the first problem by unistall and reinstall the Binding from the Paper UI.
Now the situation is:
ID | State | Lvl | Version | Name
---------------------------------------------------------------------------- ---
bla bla bla
189 | Active | 80 | 1.9.0 | openHAB Weather Binding
191 | Active | 80 | 1.9.0 | openHAB MQTT Binding
192 | Active | 80 | 1.9.0 | openHAB MQTT Transport Bundle
From the karaf consol I read
11:44:31.408 [INFO ] [smarthome.event.ItemCommandEvent ] - Item 'mqttsw2' rec eived command ON
11:44:31.432 [INFO ] [marthome.event.ItemStateChangedEvent] - mqttsw2 changed fr om OFF to ON
11:44:32.017 [INFO ] [smarthome.event.ItemCommandEvent ] - Item 'mqttsw2' rec eived command OFF
11:44:32.028 [INFO ] [marthome.event.ItemStateChangedEvent] - mqttsw2 changed fr om ON to OFF
11:44:36.450 [INFO ] [smarthome.event.ItemCommandEvent ] - Item 'mqttsw2' rec eived command ON
11:44:36.459 [INFO ] [marthome.event.ItemStateChangedEvent] - mqttsw2 changed fr om OFF to ON
11:44:37.010 [INFO ] [smarthome.event.ItemCommandEvent ] - Item 'mqttsw2' rec eived command OFF
11:44:37.021 [INFO ] [marthome.event.ItemStateChangedEvent] - mqttsw2 changed fr om ON to OFF
11:44:38.060 [INFO ] [smarthome.event.ItemCommandEvent ] - Item 'mqttsw1' rec eived command ON
11:44:38.072 [INFO ] [marthome.event.ItemStateChangedEvent] - mqttsw1 changed fr om OFF to ON
11:44:38.677 [INFO ] [smarthome.event.ItemCommandEvent ] - Item 'mqttsw1' rec eived command OFF
11:44:38.688 [INFO ] [marthome.event.ItemStateChangedEvent] - mqttsw1 changed fr om ON to OFF
But tracing the information with MQTTFX i cannot see anything about these commands,
seems they are passed from the UI to Openhab server but not delivered to the broker…
mmmmh I’m very confused 
here also my mqtt.cfg
#
# Define your MQTT broker connections here for use in the MQTT Binding or MQTT
# Persistence bundles. Replace <broker> with an ID you choose.
#
# URL to the MQTT broker, e.g. tcp://localhost:1883 or ssl://localhost:8883
mosquitto.url=tcp://10.0.0.8:1883
# Optional. Client id (max 23 chars) to use when connecting to the broker.
# If not provided a default one is generated.
mosquitto.clientId=OpenHab2
other info left hidden #
and the log file
2017-01-27 11:33:34.324 [INFO ] [.dashboard.internal.DashboardService] - Stopped dashboard
2017-01-27 11:35:28.768 [INFO ] [el.core.internal.ModelRepositoryImpl] - Loading model 'ZedHome.items'
2017-01-27 11:35:36.778 [INFO ] [el.core.internal.ModelRepositoryImpl] - Loading model 'ZedHome.rules'
2017-01-27 11:35:38.967 [WARN ] [el.core.internal.ModelRepositoryImpl] - Configuration model 'ZedHome.rules' is either empty or cannot be parsed correctly!
2017-01-27 11:35:39.043 [INFO ] [el.core.internal.ModelRepositoryImpl] - Loading model 'ZedHome.script'
2017-01-27 11:35:40.038 [INFO ] [el.core.internal.ModelRepositoryImpl] - Loading model 'ZedHome.sitemap'
2017-01-27 11:35:41.323 [INFO ] [el.core.internal.ModelRepositoryImpl] - Loading model 'ZedHome.things'
2017-01-27 11:35:41.384 [WARN ] [el.core.internal.ModelRepositoryImpl] - Configuration model 'ZedHome.things' is either empty or cannot be parsed correctly!
2017-01-27 11:35:49.051 [INFO ] [.dashboard.internal.DashboardService] - Started dashboard at /start
2017-01-27 11:35:52.459 [INFO ] [basic.internal.servlet.WebAppServlet] - Started Basic UI at /basicui/app
2017-01-27 11:35:53.240 [INFO ] [arthome.ui.paper.internal.PaperUIApp] - Started Paper UI at /paperui
2017-01-27 11:35:53.810 [INFO ] [panel.internal.HABPanelDashboardTile] - Started HABPanel at /habpanel
2017-01-27 11:35:56.115 [DEBUG] [org.openhab.binding.weather ] - BundleEvent STARTING - org.openhab.binding.weather
2017-01-27 11:35:56.149 [DEBUG] [eather.internal.bus.WeatherActivator] - Weather binding has been started.
2017-01-27 11:35:56.383 [DEBUG] [org.openhab.binding.weather ] - ServiceEvent REGISTERED - {org.openhab.model.item.binding.BindingConfigReader, org.openhab.binding.weather.WeatherBindingProvider}={component.name=org.openhab.binding.weather.genericbindingprovider, component.id=159, service.id=286, service.bundleid=189, service.scope=bundle} - org.openhab.binding.weather
2017-01-27 11:35:56.794 [DEBUG] [.weather.internal.gfx.WeatherServlet] - Starting up weather servlet at /weather
2017-01-27 11:35:57.399 [DEBUG] [org.openhab.binding.weather ] - ServiceEvent REGISTERED - {javax.servlet.ServletContext}={osgi.web.symbolicname=org.openhab.binding.weather, osgi.web.version=1.9.0, osgi.web.contextpath=/, service.id=287, service.bundleid=189, service.scope=singleton} - org.openhab.binding.weather
2017-01-27 11:35:57.436 [DEBUG] [org.openhab.binding.weather ] - BundleEvent STARTED - org.openhab.binding.weather
2017-01-27 11:35:57.466 [DEBUG] [org.openhab.binding.mqtt ] - BundleEvent STARTING - org.openhab.binding.mqtt
2017-01-27 11:35:57.514 [DEBUG] [.binding.mqtt.internal.MqttActivator] - MQTT binding has been started.
2017-01-27 11:35:57.685 [DEBUG] [org.openhab.binding.mqtt ] - BundleEvent STARTED - org.openhab.binding.mqtt
2017-01-27 11:36:00.116 [WARN ] [ore.internal.events.OSGiEventManager] - Dispatching event to subscriber 'org.eclipse.smarthome.core.thing.link.ThingLinkManager@1297543' takes more than 5000ms.
2017-01-27 11:36:01.751 [INFO ] [ding.astro.handler.AstroThingHandler] - Scheduled astro job-daily-moon at midnight for thing astro:moon:local
2017-01-27 11:36:01.755 [INFO ] [ding.astro.handler.AstroThingHandler] - Scheduled astro job-daily-sun at midnight for thing astro:sun:local
2017-01-27 11:36:01.816 [INFO ] [ding.astro.handler.AstroThingHandler] - Scheduled astro job-positional with interval of 300 seconds for thing astro:moon:local
2017-01-27 11:36:02.930 [INFO ] [.astro.internal.job.AbstractDailyJob] - Scheduled astro event-jobs for thing astro:moon:local
2017-01-27 11:36:03.100 [INFO ] [.astro.internal.job.AbstractDailyJob] - Scheduled astro event-jobs for thing astro:sun:local
2017-01-27 11:36:06.071 [WARN ] [thome.binding.ntp.handler.NtpHandler] - ntp:ntp:local couldn't establish network connection [host '0.pool.ntp.org'] -> returning current sytem time instead.
nothing happened i the logs during karaf record status change