diff --git a/src/calibre/gui2/__init__.py b/src/calibre/gui2/__init__.py
index df6ac45e5b..e699551150 100644
--- a/src/calibre/gui2/__init__.py
+++ b/src/calibre/gui2/__init__.py
@@ -269,10 +269,14 @@ def question_dialog(parent, title, msg, det_msg='', show_copy_button=True,
 
     return d.exec_() == yes_button
 
-def info_dialog(parent, title, msg, det_msg='', show=False):
+def info_dialog(parent, title, msg, det_msg='', show=False,
+        show_copy_button=True):
     d = MessageBox(QMessageBox.Information, title, msg, QMessageBox.Ok,
                     parent, det_msg)
     d.setIconPixmap(QPixmap(I('dialog_information.png')))
+    if not show_copy_button:
+        d.cb.setVisible(False)
+
     if show:
         return d.exec_()
     return d
diff --git a/src/calibre/gui2/preferences/plugins.py b/src/calibre/gui2/preferences/plugins.py
index 8b4a221f56..c53c634ab4 100644
--- a/src/calibre/gui2/preferences/plugins.py
+++ b/src/calibre/gui2/preferences/plugins.py
@@ -77,6 +77,16 @@ class PluginModel(QAbstractItemModel): # {{{
                     return self.index(j, 0, parent)
         return QModelIndex()
 
+    def plugin_to_index_by_properties(self, plugin):
+        for i, category in enumerate(self.categories):
+            parent = self.index(i, 0, QModelIndex())
+            for j, p in enumerate(self._data[category]):
+                if plugin.name == p.name and plugin.type == p.type and \
+                        plugin.author == p.author and plugin.version == p.version:
+                    return self.index(j, 0, parent)
+        return QModelIndex()
+
+
     def refresh_plugin(self, plugin, rescan=False):
         if rescan:
             self.populate()
@@ -171,7 +181,13 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
                     _('Plugin <b>{0}</b> successfully installed under <b>'
                         ' {1} plugins</b>. You may have to restart calibre '
                         'for the plugin to take effect.').format(plugin.name, plugin.type),
-                    show=True)
+                    show=True, show_copy_button=False)
+            idx = self._plugin_model.plugin_to_index_by_properties(plugin)
+            if idx.isValid():
+                self.plugin_view.scrollTo(idx,
+                        self.plugin_view.PositionAtCenter)
+                self.plugin_view.scrollTo(idx,
+                        self.plugin_view.PositionAtCenter)
         else:
             error_dialog(self, _('No valid plugin path'),
                          _('%s is not a valid plugin path')%path).exec_()
@@ -201,10 +217,13 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
                 if plugin.do_user_config():
                     self._plugin_model.refresh_plugin(plugin)
             elif op == 'remove':
+                msg = _('Plugin {0} successfully removed').format(plugin.name)
                 if remove_plugin(plugin):
                     self._plugin_model.populate()
                     self._plugin_model.reset()
                     self.changed_signal.emit()
+                    info_dialog(self, _('Success'), msg, show=True,
+                            show_copy_button=False)
                 else:
                     error_dialog(self, _('Cannot remove builtin plugin'),
                          plugin.name + _(' cannot be removed. It is a '
diff --git a/src/calibre/gui2/ui.py b/src/calibre/gui2/ui.py
index 798420200a..a6eeabd57f 100644
--- a/src/calibre/gui2/ui.py
+++ b/src/calibre/gui2/ui.py
@@ -19,7 +19,7 @@ from PyQt4.Qt import Qt, SIGNAL, QTimer, \
                      QMessageBox, QHelpEvent
 
 from calibre import  prints
-from calibre.constants import __appname__, isosx, DEBUG
+from calibre.constants import __appname__, isosx
 from calibre.ptempfile import PersistentTemporaryFile
 from calibre.utils.config import prefs, dynamic
 from calibre.utils.ipc.server import Server
diff --git a/src/calibre/library/database2.py b/src/calibre/library/database2.py
index 48c62efffe..aa491aff28 100644
--- a/src/calibre/library/database2.py
+++ b/src/calibre/library/database2.py
@@ -298,8 +298,8 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                             base,
                             prefer_custom=True)
 
-        self.FIELD_MAP['ondevice'] = base+1
-        self.field_metadata.set_field_record_index('ondevice', base+1, prefer_custom=False)
+        self.FIELD_MAP['ondevice'] = base = base+1
+        self.field_metadata.set_field_record_index('ondevice', base, prefer_custom=False)
 
         script = '''
         DROP VIEW IF EXISTS meta2;
@@ -1373,9 +1373,8 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
             if r is not None:
                 if (now - r[self.FIELD_MAP['timestamp']]) > delta:
                     tags = r[self.FIELD_MAP['tags']]
-                    tags = tags.lower().split(',') if tags else []
-                    tags = [tag.strip() for tag in tags if tag.strip()]
-                    if tag in tags:
+                    if tags and tag in [x.strip() for x in
+                            tags.lower().split(',')]:
                         yield r[self.FIELD_MAP['id']]
 
     def get_next_series_num_for(self, series):