Index: debian/univention-management-console-module-appcenter.postinst
===================================================================
--- debian/univention-management-console-module-appcenter.postinst	(Revision 47751)
+++ debian/univention-management-console-module-appcenter.postinst	(Arbeitskopie)
@@ -70,5 +70,9 @@
 "
 fi
 
+if dpkg --compare-versions "$2" lt-nl 3.0.51-3; then
+	/usr/sbin/univention-rename-app tine20org tine20
+fi
+
 exit 0
 
Index: debian/univention-management-console-module-appcenter.install
===================================================================
--- debian/univention-management-console-module-appcenter.install	(Revision 47811)
+++ debian/univention-management-console-module-appcenter.install	(Arbeitskopie)
@@ -2,3 +2,4 @@
 ldap/*.schema usr/share/univention-management-console-module-appcenter
 ldap/*.acl usr/share/univention-management-console-module-appcenter
 scripts/univention-register-apps usr/sbin/
+scripts/univention-rename-app usr/sbin/
Index: umc/js/de.po
===================================================================
--- umc/js/de.po	(Revision 48029)
+++ umc/js/de.po	(Arbeitskopie)
@@ -1019,9 +1019,6 @@
 #~ "aus, <em>nachdem</em> Sie die Applikation auf diesem System installiert "
 #~ "haben."
 
-#~ msgid "Buy"
-#~ msgstr "Kaufen"
-
 #~ msgid "Categories"
 #~ msgstr "Kategorien"
 
Index: umc/python/appcenter/app_center.py
===================================================================
--- umc/python/appcenter/app_center.py	(Revision 48083)
+++ umc/python/appcenter/app_center.py	(Arbeitskopie)
@@ -341,12 +341,14 @@
 			if self.get(ikey):
 				self._options[ikey] = urljoin('%s/' % self.get_metainf_url(), self.get(ikey))
 
+		# versions will be set to something meaningful by Application.all()
+		self.versions = [self]
+
 		# save important meta data
-		self.id = self._options['id'] = self._options['id'].lower()
+		self.id = self.ldap_id = self.ldap_container = None
+		self.set_id(self._options['id'])
 		self.name = self._options['name']
 		self.version = self._options['version']
-		self.ldap_container = 'cn=%s,cn=apps,cn=univention,%s' % (self.id, ucr.get('ldap/base'))
-		self.ldap_id = '%s_%s' % (self.id, self.version)
 
 		# get the name of the component
 		m = self._reg_component_id.match(url)
@@ -368,6 +370,18 @@
 		# is set by all()
 		self.candidate = None
 
+	def set_id(self, app_id, recursive=True):
+		if recursive:
+			for iapp in self.versions:
+				# will call also for self!
+				iapp.set_id(app_id, recursive=False)
+		else:
+			app_id = app_id.lower()
+			self.id = app_id
+			self._options['id'] = app_id
+			self.ldap_id = '%s_%s' % (self.id, self.get('version'))
+			self.ldap_container = 'cn=%s,cn=apps,cn=univention,%s' % (self.id, ucr.get('ldap/base'))
+
 	def get(self, key):
 		'''Helper function to access configuration elements of the application's .ini
 		file. If element is not given, returns (for string elements) an empty string.