diff --git a/app/assets/javascripts/app/controllers/widget/dev_banner.js.coffee b/app/assets/javascripts/app/controllers/widget/dev_banner.js.coffee
index 6136c6787..8d26e7d00 100644
--- a/app/assets/javascripts/app/controllers/widget/dev_banner.js.coffee
+++ b/app/assets/javascripts/app/controllers/widget/dev_banner.js.coffee
@@ -1,20 +1,20 @@
 class Widget
   constructor: ->
-    return if App.Config.get('developer_mode')
+    return if !App.Config.get('developer_mode')
+    return if App.Log.config('banner') is false
     banner = """
-|  _____                                    _
-| / _  / __ _ _ __ ___  _ __ ___   __ _  __| |
-| \\// / / _` | '_ ` _ \\| '_ ` _ \\ / _` |/ _` |
-|  / //\\ (_| | | | | | | | | | | | (_| | (_| |
-| /____/\\__,_|_| |_| |_|_| |_| |_|\\__,_|\\__,_|
 |
-| Hi there, nice to meet you!
+| Welcome Zammad Developer!
+| You can enable debugging by the following examples (value is a regex):
 |
-| Visit %chttp://zammad.com/jobs%c to learn about our current job openings.
+| App.Log.config('module', 'i18n|websocket') // enable debugging for i18n and websocket class
+| App.Log.config('content', 'send')          // enable debugging for messages which contains the string 'send'
+| App.Log.config('banner', false)            // disable this banner
 |
-| Your Zammad Team!
+| App.Log.config()         // current settings
+| App.Log.config('banner') // current setting for banner
 |
 """
-    console.log(banner, "text-decoration: underline;", "text-decoration: none;")
+    console.log(banner)
 
 App.Config.set( 'dev_banner', Widget, 'Widgets' )
diff --git a/app/assets/javascripts/app/controllers/widget/hello_banner.js.coffee b/app/assets/javascripts/app/controllers/widget/hello_banner.js.coffee
new file mode 100644
index 000000000..0d537b506
--- /dev/null
+++ b/app/assets/javascripts/app/controllers/widget/hello_banner.js.coffee
@@ -0,0 +1,20 @@
+class Widget
+  constructor: ->
+    return if App.Config.get('developer_mode')
+    banner = """
+|  _____                                    _
+| / _  / __ _ _ __ ___  _ __ ___   __ _  __| |
+| \\// / / _` | '_ ` _ \\| '_ ` _ \\ / _` |/ _` |
+|  / //\\ (_| | | | | | | | | | | | (_| | (_| |
+| /____/\\__,_|_| |_| |_|_| |_| |_|\\__,_|\\__,_|
+|
+| Hi there, nice to meet you!
+|
+| Visit %chttp://zammad.com/jobs%c to learn about our current job openings.
+|
+| Your Zammad Team!
+|
+"""
+    console.log(banner, "text-decoration: underline;", "text-decoration: none;")
+
+App.Config.set( 'hello_banner', Widget, 'Widgets' )
diff --git a/app/assets/javascripts/app/lib/app_init/log.js.coffee b/app/assets/javascripts/app/lib/app_init/log.js.coffee
index 24ba6b268..533858b02 100644
--- a/app/assets/javascripts/app/lib/app_init/log.js.coffee
+++ b/app/assets/javascripts/app/lib/app_init/log.js.coffee
@@ -22,24 +22,83 @@ class App.Log
       _instance ?= new _Singleton
     _instance.log( module, 'error', args )
 
+  @config: ( type, regex ) ->
+    if _instance == undefined
+      _instance ?= new _Singleton
+    _instance.config( type, regex )
+
 class _Singleton
   constructor: ->
-    @config = {}
-#    @config['Collection'] = true
-#      Session: true
-#      ControllerForm: true
+    @moduleColorsMap = {}
+    @currentConfig = {}
+    if window.localStorage
+      raw = window.localStorage.getItem('log_config')
+      if raw
+        @currentConfig = JSON.parse(raw)
+
+    # example config to enable debugging
+    #@config('module', 'i18n|websocket')
+    #@config('content', 'send')
+
+    # detect color support
+    @colorSupport = false
+    data = App.Browser.detection()
+    if data && (data.browser is 'Chrome' || ( data.browser is 'Firefox' && data.version >= 31.0 ) )
+      @colorSupport = true
+
+  config: (type = undefined, value = undefined) ->
+
+    # get
+    if value is undefined
+      if type
+        return @currentConfig[type]
+      return @currentConfig
+
+    # set
+    if type is 'module' || type is 'content'
+      @currentConfig[type] = new RegExp(value, 'i')
+    else
+      @currentConfig[type] = value
+    if window.localStorage
+      window.localStorage.setItem('log_config', JSON.stringify(@currentConfig))
 
   log: ( module, level, args ) ->
-    if !@config || level isnt 'debug'
-      @_log( module, level, args )
-    else if @config[ module ]
-      @_log( module, level, args )
+    if level is 'debug'
+      return if !@currentConfig.module && !@currentConfig.content
+      return if @currentConfig.module && !module.match(@currentConfig.module)
+      return if @currentConfig.content && !args.toString().match(@currentConfig.content)
+    @_log( module, level, args )
 
   _log: ( module, level, args ) ->
-    if level is 'error'
-      console.error "App.#{module}(#{level})", args
-    else if level is 'debug'
-      console.debug "App.#{module}(#{level})", args
-    else
-      console.log "App.#{module}(#{level})", args
+    prefixLength = 28
+    prefix       = "App.#{module}(#{level})"
+    if prefix.length < prefixLength
+      prefix += Array(prefixLength - prefix.length).join(' ')
+    prefix += '|'
+    prefix = '%c' + prefix
 
+    if @colorSupport
+      if !@moduleColorsMap[module]
+        @moduleColorsMap[module]= @yieldColor()
+      color       = @moduleColorsMap[module]
+      colorString = "color: hsl(" + (color) + ",99%,40%); font-weight: bold";
+      logArgs     = [prefix, colorString].concat(args)
+    else
+      logArgs = [prefix].concat(args)
+
+    if level is 'error'
+      console.error.apply console, logArgs
+    else if level is 'debug'
+      console.debug.apply console, logArgs
+    else
+      console.log.apply console, logArgs
+
+  # used inpirations from http://latentflip.com/bows/
+  yieldColor: =>
+    if !@hue
+      @hue = 0
+    @hue += 1
+    goldenRatio = 0.618033988749895
+    @hue += goldenRatio
+    @hue = @hue % 1
+    @hue * 360
\ No newline at end of file
diff --git a/app/assets/javascripts/app/lib/app_init/track.js.coffee b/app/assets/javascripts/app/lib/app_init/track.js.coffee
index fcad10c99..4ab84f716 100644
--- a/app/assets/javascripts/app/lib/app_init/track.js.coffee
+++ b/app/assets/javascripts/app/lib/app_init/track.js.coffee
@@ -102,6 +102,7 @@ class _trackSingleton
     )
 
   log: ( facility, level, args ) ->
+    return if !App.Config.get('developer_mode')
     return if !App.Config.get('ui_send_client_stats')
     info =
       time:     Math.round( new Date().getTime() / 1000 )
@@ -112,6 +113,7 @@ class _trackSingleton
     @data.push info
 
   send: (async = true) =>
+    return if !App.Config.get('developer_mode')
     return if !App.Config.get('ui_send_client_stats')
     return if _.isEmpty @data
     newData = _.clone( @data )
diff --git a/app/assets/javascripts/app/lib/app_post/auth.js.coffee b/app/assets/javascripts/app/lib/app_post/auth.js.coffee
index 5ffb3093c..6d4225960 100644
--- a/app/assets/javascripts/app/lib/app_post/auth.js.coffee
+++ b/app/assets/javascripts/app/lib/app_post/auth.js.coffee
@@ -21,7 +21,7 @@ class App.Auth
     )
 
   @loginCheck: ->
-    App.Log.notice 'Auth', 'loginCheck'
+    App.Log.debug 'Auth', 'loginCheck'
     App.Ajax.request(
       id:    'login_check'
       async: false
@@ -37,7 +37,7 @@ class App.Auth
     )
 
   @logout: ->
-    App.Log.notice 'Auth', 'logout'
+    App.Log.debug 'Auth', 'logout'
     App.Ajax.request(
       id:   'logout'
       type: 'DELETE'
@@ -52,7 +52,7 @@ class App.Auth
     )
 
   @_login: (data, type) ->
-    App.Log.notice 'Auth', '_login:success', data
+    App.Log.debug 'Auth', '_login:success', data
 
     # if session is not valid
     if data.error
@@ -129,7 +129,7 @@ class App.Auth
 
 
   @_logout: (data) ->
-    App.Log.notice 'Auth', '_logout'
+    App.Log.debug 'Auth', '_logout', data
 
     # empty session
     App.Session.init()
@@ -139,8 +139,8 @@ class App.Auth
     App.Event.trigger( 'ui:rerender' )
     App.Event.trigger( 'clearStore' )
 
-  @_loginError: (xhr, statusText, error) ->
-    App.Log.notice 'Auth', '_loginError:error'
+  @_loginError: ->
+    App.Log.error 'Auth', '_loginError:error'
 
     # empty session
     App.Session.init()
diff --git a/app/assets/javascripts/app/lib/app_post/browser.coffee b/app/assets/javascripts/app/lib/app_post/browser.coffee
index d9dc3304b..880aa528f 100644
--- a/app/assets/javascripts/app/lib/app_post/browser.coffee
+++ b/app/assets/javascripts/app/lib/app_post/browser.coffee
@@ -29,7 +29,7 @@ class App.Browser
 
     # define min. required browser version
     map =
-      Chrome2: 37
+      Chrome: 37
       Firefox: 31
       Explorer: 10
       Safari: 6
diff --git a/app/assets/javascripts/app/lib/app_post/interface_handle.js.coffee b/app/assets/javascripts/app/lib/app_post/interface_handle.js.coffee
index 23df47a44..8ba574f06 100644
--- a/app/assets/javascripts/app/lib/app_post/interface_handle.js.coffee
+++ b/app/assets/javascripts/app/lib/app_post/interface_handle.js.coffee
@@ -54,7 +54,7 @@ class App.Content extends App.Controller
       do (route, callback) =>
         @route(route, (params) ->
 
-          @log 'notice', 'execute page controller', route, params
+          @log 'debug', 'execute page controller', route, params
 
           # remove events for page
           App.Event.unbindLevel('page')
diff --git a/app/assets/javascripts/app/lib/app_post/websocket.js.coffee b/app/assets/javascripts/app/lib/app_post/websocket.js.coffee
index 3e0f4fe53..907907f73 100644
--- a/app/assets/javascripts/app/lib/app_post/websocket.js.coffee
+++ b/app/assets/javascripts/app/lib/app_post/websocket.js.coffee
@@ -159,7 +159,7 @@ class _webSocketSingleton extends App.Controller
     # check if ping is back within 2 min
     App.Delay.clear 'websocket-ping-check', 'ws'
     check = =>
-      @log 'notice', 'no websocket ping response, reconnect...'
+      @log 'debug', 'no websocket ping response, reconnect...'
       @close()
     App.Delay.set check, 90000, 'websocket-ping-check', 'ws'
 
@@ -175,7 +175,7 @@ class _webSocketSingleton extends App.Controller
 
     if !window.WebSocket
       @backend = 'ajax'
-      @log 'notice', 'no support of websocket, use ajax long polling'
+      @log 'debug', 'no support of websocket, use ajax long polling'
       @_ajaxInit()
       return
 
@@ -195,7 +195,7 @@ class _webSocketSingleton extends App.Controller
     @ws.onopen = =>
       if @backend_port
         port = ":#{@backend_port}"
-      @log 'notice', "new websocket (#{@channel()}#{port}) connection open"
+      @log 'debug', "new websocket (#{@channel()}#{port}) connection open"
 
       @connectionEstablished    = true
       @connectionWasEstablished = true
@@ -224,7 +224,7 @@ class _webSocketSingleton extends App.Controller
       @_receiveMessage(pipe)
 
     @ws.onclose = (e) =>
-      @log 'notice', 'close websocket connection'
+      @log 'debug', 'close websocket connection'
 
       # take connection down and keep it down
       return if @connectionKeepDown
@@ -237,7 +237,7 @@ class _webSocketSingleton extends App.Controller
 
         # use ws dedicated port fallback if no connection was possible
         if @backend is 'websocket'
-          @log 'notice', 'no websocket connection on /ws, use :port/'
+          @log 'debug', 'no websocket connection on /ws, use :port/'
           @backend = 'websocketPort'
           @connect()
           return
@@ -246,7 +246,7 @@ class _webSocketSingleton extends App.Controller
         if @backend is 'websocketPort'
           if @backend_port
             port = ":#{@backend_port}"
-          @log 'notice', "no websocket connection on port #{port}, use ajax long polling as fallback"
+          @log 'debug', "no websocket connection on port #{port}, use ajax long polling as fallback"
           @backend = 'ajax'
           @connect()
           return
@@ -317,7 +317,7 @@ class _webSocketSingleton extends App.Controller
       queue: false
       success: (data) =>
         if data.client_id
-          @log 'notice', 'ajax:new client_id', data.client_id
+          @log 'debug', 'ajax:new client_id', data.client_id
           @client_id = data.client_id
           @_ajaxReceive()
           @_ajaxSendQueue()
@@ -369,7 +369,7 @@ class _webSocketSingleton extends App.Controller
       data:  JSON.stringify({ client_id: @client_id })
       processData: false
       success: (data) =>
-        @log 'notice', 'ajax:onmessage', data
+        @log 'debug', 'ajax:onmessage', data
         @_receiveMessage(data)
         if data && data.error
           @client_id = undefined