I am seeing many of my bindings start and then stop with nothing obvious in the logs:
18-Dec-2017 12:28:17.412 [DEBUG] [org.openhab.binding.http ] - BundleEvent [unknown:512] - org.openhab.binding.http
18-Dec-2017 12:28:17.415 [DEBUG] [org.openhab.binding.http ] - ServiceEvent REGISTERED - {org.openhab.model.item.binding.BindingConfigReader, org.openhab.binding.http.HttpBindingProvider}={component.name=org.openhab.binding.http.genericbindingprovider, component.id=17, service.id=122, service.bundleid=213, service.scope=bundle} - org.openhab.binding.http
18-Dec-2017 12:28:17.462 [DEBUG] [org.openhab.binding.http ] - BundleEvent STARTING - org.openhab.binding.http
18-Dec-2017 12:28:17.462 [DEBUG] [org.openhab.binding.http.internal.HttpActivator ] - HTTP binding has been started.
18-Dec-2017 12:28:17.462 [DEBUG] [org.openhab.binding.http ] - BundleEvent STARTED - org.openhab.binding.http
18-Dec-2017 12:28:19.510 [DEBUG] [org.openhab.binding.http ] - BundleEvent STOPPING - org.openhab.binding.http
18-Dec-2017 12:28:19.513 [DEBUG] [org.openhab.binding.http ] - ServiceEvent UNREGISTERING - {org.openhab.model.item.binding.BindingConfigReader, org.openhab.binding.http.HttpBindingProvider}={component.name=org.openhab.binding.http.genericbindingprovider, component.id=17, service.id=122, service.bundleid=213, service.scope=bundle} - org.openhab.binding.http
18-Dec-2017 12:28:19.514 [DEBUG] [org.openhab.binding.http.internal.HttpActivator ] - HTTP binding has been stopped.
18-Dec-2017 12:28:19.514 [DEBUG] [org.openhab.binding.http ] - BundleEvent STOPPED - org.openhab.binding.http
18-Dec-2017 12:28:17.404 [DEBUG] [org.openhab.action.mail ] - BundleEvent [unknown:512] - org.openhab.action.mail
18-Dec-2017 12:28:17.406 [DEBUG] [org.openhab.action.mail ] - ServiceEvent REGISTERED - {org.openhab.core.scriptengine.action.ActionService, org.osgi.service.cm.ManagedService}={service.pid=org.openhab.mail, component.name=org.openhab.action.mai
l.action, component.id=14, service.id=121, service.bundleid=208, service.scope=bundle} - org.openhab.action.mail
18-Dec-2017 12:28:17.406 [DEBUG] [org.openhab.action.mail ] - BundleEvent STARTING - org.openhab.action.mail
18-Dec-2017 12:28:17.407 [DEBUG] [org.openhab.action.mail.internal.MailActivator ] - Mail action has been started.
18-Dec-2017 12:28:17.407 [DEBUG] [org.openhab.action.mail ] - BundleEvent STARTED - org.openhab.action.mail
18-Dec-2017 12:28:19.515 [DEBUG] [org.openhab.action.mail ] - BundleEvent STOPPING - org.openhab.action.mail
18-Dec-2017 12:28:19.517 [DEBUG] [org.openhab.action.mail ] - ServiceEvent UNREGISTERING - {org.openhab.core.scriptengine.action.ActionService, org.osgi.service.cm.ManagedService}={service.pid=org.openhab.mail, component.name=org.openhab.action.
mail.action, component.id=14, service.id=121, service.bundleid=208, service.scope=bundle} - org.openhab.action.mail
18-Dec-2017 12:28:19.519 [DEBUG] [org.openhab.action.mail.internal.MailActivator ] - Mail action has been stopped.
18-Dec-2017 12:28:19.520 [DEBUG] [org.openhab.action.mail ] - BundleEvent STOPPED - org.openhab.action.mail
expire.log:18-Dec-2017 12:28:30.296 [DEBUG] [org.openhab.binding.expire ] - ServiceEvent REGISTERED - {org.openhab.model.item.binding.BindingConfigReader, org.openhab.binding.expire.ExpireBindingProvider}={component.name=org.openhab.binding.expire.genericbindingprovider, component.id=206, service.id=320, service.bundleid=212, service.scope=bundle} - org.openhab.binding.expire
openhab.log:2017-12-18 12:28:30.296 [INFO ] [b.core.service.AbstractActiveService] - Expire Refresh Service has been started
openhab.log:2017-12-18 12:28:41.298 [INFO ] [b.core.service.AbstractActiveService] - Expire Refresh Service has been shut down