diff --git a/po/vi.po b/po/vi.po
index 06606aa4..062173a7 100644
--- a/po/vi.po
+++ b/po/vi.po
@@ -5,7 +5,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: sugar-toolkit\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2009-08-26 00:33-0400\n"
+"POT-Creation-Date: 2010-01-20 13:10-0500\n"
 "PO-Revision-Date: 2009-09-25 09:03-0400\n"
 "Last-Translator: Clytie Siddall <clytie@riverland.net.au>\n"
 "Language-Team: Vietnamese <vi-VN@googlegroups.com>\n"
@@ -16,24 +16,24 @@ msgstr ""
 "Plural-Forms: nplurals=1; plural=0;\n"
 "X-Generator: Pootle 1.2.1\n"
 
-#: ../src/sugar/activity/activity.py:329
+#: ../src/sugar/activity/activity.py:338
 #, python-format
 msgid "%s Activity"
 msgstr "Hoạt động %s"
 
-#: ../src/sugar/activity/activity.py:714
+#: ../src/sugar/activity/activity.py:738
 msgid "Keep error"
 msgstr "Giữ lỗi"
 
-#: ../src/sugar/activity/activity.py:715
+#: ../src/sugar/activity/activity.py:739
 msgid "Keep error: all changes will be lost"
 msgstr "Giữ lỗi: tất cả các thay đổi sẽ bị mất"
 
-#: ../src/sugar/activity/activity.py:718
+#: ../src/sugar/activity/activity.py:742
 msgid "Don't stop"
 msgstr "Không dừng"
 
-#: ../src/sugar/activity/activity.py:721
+#: ../src/sugar/activity/activity.py:745
 msgid "Stop anyway"
 msgstr "Vẫn dừng"
 
@@ -42,7 +42,7 @@ msgid "Name this entry"
 msgstr "Đặt tên mục nhập này"
 
 #: ../src/sugar/activity/namingalert.py:87
-#: ../src/sugar/activity/widgets.py:162
+#: ../src/sugar/activity/widgets.py:166
 msgid "Keep"
 msgstr "Giữ"
 
@@ -58,35 +58,35 @@ msgstr "Mô tả:"
 msgid "Tags:"
 msgstr "Thẻ:"
 
-#: ../src/sugar/activity/widgets.py:79
+#: ../src/sugar/activity/widgets.py:83
 msgid "Stop"
 msgstr "Dừng"
 
-#: ../src/sugar/activity/widgets.py:91
+#: ../src/sugar/activity/widgets.py:95
 msgid "Undo"
 msgstr "Hủy bước"
 
-#: ../src/sugar/activity/widgets.py:99
+#: ../src/sugar/activity/widgets.py:103
 msgid "Redo"
 msgstr "Hoàn lại"
 
-#: ../src/sugar/activity/widgets.py:106
+#: ../src/sugar/activity/widgets.py:110
 msgid "Copy"
 msgstr "Chép"
 
-#: ../src/sugar/activity/widgets.py:113
+#: ../src/sugar/activity/widgets.py:117
 msgid "Paste"
 msgstr "Dán"
 
-#: ../src/sugar/activity/widgets.py:123
+#: ../src/sugar/activity/widgets.py:127
 msgid "Private"
 msgstr "Riêng"
 
-#: ../src/sugar/activity/widgets.py:130
+#: ../src/sugar/activity/widgets.py:134
 msgid "My Neighborhood"
 msgstr "Hàng xóm mình"
 
-#: ../src/sugar/activity/widgets.py:341
+#: ../src/sugar/activity/widgets.py:345
 msgid "Activity"
 msgstr "Hoạt động"
 
diff --git a/src/sugar/activity/activity.py b/src/sugar/activity/activity.py
index d4892d04..c91a023c 100644
--- a/src/sugar/activity/activity.py
+++ b/src/sugar/activity/activity.py
@@ -393,6 +393,9 @@ class Activity(Window, gtk.Container):
         """Returns the bundle_id from the activity.info file"""
         return os.environ['SUGAR_BUNDLE_ID']
 
+    def get_canvas(self):
+        return Window.get_canvas(self)
+
     def set_canvas(self, canvas):
         """Sets the 'work area' of your activity with the canvas of your
         choice.
@@ -403,6 +406,8 @@ class Activity(Window, gtk.Container):
         if not self._read_file_called:
             canvas.connect('map', self.__canvas_map_cb)
 
+    canvas = property(get_canvas, set_canvas)
+
     def __screen_size_changed_cb(self, screen):
         self._adapt_window_to_screen()
 
@@ -517,7 +522,7 @@ class Activity(Window, gtk.Container):
         if self._closing:
             self._show_keep_failed_dialog()
             self._closing = False
-        logging.debug('Error saving activity object to datastore: %s', err)
+        raise RuntimeError('Error saving activity object to datastore: %s', err)
 
     def _cleanup_jobject(self):
         if self._jobject:
@@ -769,7 +774,7 @@ class Activity(Window, gtk.Container):
             try:
                 self.save()
             except:
-                logging.info(traceback.format_exc())
+                logging.exception('Error saving activity object to datastore')
                 self._show_keep_failed_dialog()
                 return False
 
@@ -800,7 +805,8 @@ class Activity(Window, gtk.Container):
         if not self.can_close():
             return
 
-        if skip_save or self.metadata.get('title_set_by_user', '0') == '1':
+        if skip_save or self._jobject is None or \
+                self.metadata.get('title_set_by_user', '0') == '1':
             if not self._closing:
                 if not self._prepare_close(skip_save):
                     return
diff --git a/src/sugar/activity/activityfactory.py b/src/sugar/activity/activityfactory.py
index eda7d9a9..c12630e9 100644
--- a/src/sugar/activity/activityfactory.py
+++ b/src/sugar/activity/activityfactory.py
@@ -149,8 +149,7 @@ def open_log_file(activity):
     while True:
         path = env.get_logs_path('%s-%s.log' % (activity.get_bundle_id(), i))
         try:
-            fd = os.open(path, os.O_EXCL | os.O_CREAT \
-                             | os.O_SYNC | os.O_WRONLY, 0644)
+            fd = os.open(path, os.O_EXCL | os.O_CREAT | os.O_WRONLY, 0644)
             f = os.fdopen(fd, 'w', 0)
             return (path, f)
         except OSError, e:
diff --git a/src/sugar/bundle/contentbundle.py b/src/sugar/bundle/contentbundle.py
index 4b483cbd..48e05a1f 100644
--- a/src/sugar/bundle/contentbundle.py
+++ b/src/sugar/bundle/contentbundle.py
@@ -74,18 +74,6 @@ class ContentBundle(Bundle):
 
         section = 'Library'
 
-        if cp.has_option(section, 'host_version'):
-            version = cp.get(section, 'host_version')
-            try:
-                if int(version) != 1:
-                    raise MalformedBundleException(
-                        'Content bundle %s has unknown host_version '
-                        'number %s' % (self._path, version))
-            except ValueError:
-                raise MalformedBundleException(
-                    'Content bundle %s has invalid host_version number %s' %
-                    (self._path, version))
-
         if cp.has_option(section, 'name'):
             self._name = cp.get(section, 'name')
         else: