--- univention-updater/modules/univention/management/console/handlers/update/__init__.py
+++ univention-updater/modules/univention/management/console/handlers/update/__init__.py
@@ -41,6 +41,7 @@ import univention.debug as ud
 import univention.config_registry
 
 from univention.updater import UniventionUpdater
+from json import JsonReader, JsonWriter
 
 import os
 import subprocess, string, time
@@ -125,7 +126,13 @@ command_description = {
 		values = {
 		},
 	),
-
+	'update/tail_file': umch.command(
+		short_description = _('Get tail of logfile' ),
+		method = 'tail_file',
+		values = {
+			'filename': umc.String( _( 'Name of the log file' ), required = False ),
+		},
+	),
 }
 
 
@@ -146,6 +153,7 @@ class handler(umch.simpleHandler):
 
 		self.ucr_reinit = False
 
+		self.tail_fn2fd = {}
 
 	def overview(self, object):
 		_d = ud.function('update.handler.overview')
@@ -389,6 +397,49 @@ class handler(umch.simpleHandler):
 		self.finished(object.id(), stdout)
 
 
+	def tail_file(self, object):
+		_d = ud.function('update.handler.tail_file')
+
+		logfn = object.options.get('filename')
+		if not logfn in ('/var/log/univention/updater.log'):
+			self.finished(object.id(), '%s: access not allowed by UMC module' % logfn)
+			return
+
+		# create fd if fd is not present
+		if not logfn in self.tail_fn2fd:
+			fd = open(logfn,'r+')
+			self.tail_fn2fd[logfn] = fd
+		else:
+			fd = self.tail_fn2fd[logfn]
+
+		curpos = fd.tell()
+		fd.seek(0,2)       # seek to file end
+		endpos = fd.tell()
+		fd.seek(curpos,0)  # seek back to cur pos
+		pendingbytes = endpos - curpos
+		data = fd.read(pendingbytes)  # get pending data
+		ud.debug(ud.ADMIN, ud.PROCESS, 'update.handler.tail_file: %d %d %d %d' % (curpos, endpos, pendingbytes, len(data)))
+
+		self.finished(object.id(), {'data': data, 'test': 'das ist ein test'})
+
+	def _web_tail_file(self, object, res):
+		_d = ud.function('update.handler._web_tail_file')
+		content_type = 'application/json'
+		content = ''
+
+		data = {}
+		data['identifier'] = 'data'
+		data['label'] = 'updater data'
+		data['items'] = [ res.dialog ]
+		try:
+			json = JsonWriter()
+			content = json.write(data)
+		except:
+			ud.debug(ud.ADMIN, ud.PROCESS, 'update.handler._web_tail_file: failed to create JSON: %s' % (traceback.format_exc().replace('%','#')) )
+		res.dialog = { 'Content-Type': content_type, 'Content': content }
+		self.revamped( object.id(), res, rawresult = True )
+
+
 	#######################
 	# The revamp functions
 	#######################
@@ -506,7 +557,39 @@ class handler(umch.simpleHandler):
 		frame_release = umcd.Frame([list_release], _('Release information'))
 		frame_component = umcd.Frame([list_component], _('Components'))
 
-		res.dialog = [frame_release, frame_component]
+		javascript = umcd.HTML ("""<script type='text/javascript'>
+var umc = {};
+umc.updater = {};
+umc.updater.updateData = function(sessionid) {
+	var foocallback = function (item, request) {
+	    dojo.byId ('taildata').innerHTML = dojo.byId ('taildata').innerHTML + item.data;
+		dojo.byId('tailwnd').scrollTop = dojo.byId('tailwnd').scrollHeight;
+		return false;
+	};
+
+	if (umc.updater.store) {
+		umc.updater.store.close ()
+	}
+	umc.updater.store = new dojo.data.ItemFileReadStore ({url:'ajax.py?session_id='+sessionid+'&umcpcmd=update/tail_file&filename=/var/log/univention/updater.log&date=' + new Date ().getTime ()});
+	umc.updater.store.fetch (
+		{
+			query: {data: '*'},
+			onItem: foocallback,
+		}
+	);
+};
+dojo.addOnLoad (function () {
+    window.setInterval( function () {umc.updater.updateData ('%s');}, 2000);
+});
+dojo.require ('dojo.data.ItemFileReadStore');
+				</script>""" % (self._sessionid))
+		divitems = umcd.HTML('<div id="tailwnd" style="width:800px; height:200px; overflow: scroll; border:1px solid #000000; margin: 1px"><pre id="taildata">TEST</pre></div>')
+
+		list_test = umcd.List()
+		list_test.add_row([divitems, javascript])
+		frame_test = umcd.Frame([list_test], _('LOG TEST'))
+
+		res.dialog = [frame_test, frame_release, frame_component]
 		if frame_info:
 			res.dialog.insert( 0, frame_info )