diff --git a/scm-webapp/src/main/java/sonia/scm/event/GuavaScmEventBus.java b/scm-webapp/src/main/java/sonia/scm/event/GuavaScmEventBus.java
index aba28c8186..fa2e6a1e67 100644
--- a/scm-webapp/src/main/java/sonia/scm/event/GuavaScmEventBus.java
+++ b/scm-webapp/src/main/java/sonia/scm/event/GuavaScmEventBus.java
@@ -123,7 +123,7 @@ public class GuavaScmEventBus extends ScmEventBus
   @Override
   public void register(Object object, boolean async)
   {
-    logger.debug("register {} to event bus, async = {}", object, async);
+    logger.trace("register {} to event bus, async = {}", object, async);
 
     if (async)
     {
@@ -144,7 +144,7 @@ public class GuavaScmEventBus extends ScmEventBus
   @Override
   public void unregister(Object object)
   {
-    logger.debug("unregister {} from event bus", object);
+    logger.trace("unregister {} from event bus", object);
     unregister(asyncEventBus, object);
     unregister(eventBus, object);
   }
diff --git a/scm-webapp/src/main/resources/logback.default.xml b/scm-webapp/src/main/resources/logback.default.xml
index 3550607db6..318cd6112a 100644
--- a/scm-webapp/src/main/resources/logback.default.xml
+++ b/scm-webapp/src/main/resources/logback.default.xml
@@ -61,7 +61,10 @@
   <logger name="sonia.scm.filter.GZipResponseStream" level="WARN" />
   
   <logger name="sonia.scm.util.ServiceUtil" level="WARN" />
+  <logger name="sonia.scm.ScmEventBusModule" level="DEBUG" />
+  <logger name="sonia.scm.event.GuavaScmEventBus" level="DEBUG" />
   <logger name="sonia.scm.plugin.ext.DefaultAnnotationScanner" level="INFO" />
+  <logger name="sonia.scm.security.ConfigurableLoginAttemptHandler" level="DEBUG" />
   
   <logger name="sonia.scm.web.cgi.DefaultCGIExecutor" level="DEBUG" />