diff --git a/cps/db.py b/cps/db.py
index e4082a16..f25848c7 100755
--- a/cps/db.py
+++ b/cps/db.py
@@ -294,7 +294,7 @@ def setup_db():
         return False
 
     dbpath = os.path.join(config.config_calibre_dir, "metadata.db")
-    engine = create_engine('sqlite:///{0}'.format(dbpath.encode('utf-8')), echo=False)
+    engine = create_engine('sqlite:///{0}'.format(dbpath.encode('utf-8')), echo=False, isolation_level="SERIALIZABLE")
     try:
         conn = engine.connect()
 
diff --git a/cps/static/js/main.js b/cps/static/js/main.js
index 0a184530..8b0b099f 100644
--- a/cps/static/js/main.js
+++ b/cps/static/js/main.js
@@ -50,7 +50,7 @@ $(function() {
     });
     $("#check_for_update").click(function() {
         var button_text = $("#check_for_update").html();
-        $("#check_for_update").html('Checking...');
+        $("#check_for_update").html('...');
         $.ajax({
             dataType: 'json',
             url: window.location.pathname+"/../../get_update_status",
diff --git a/cps/templates/stats.html b/cps/templates/stats.html
index 7ab72092..4b08afda 100644
--- a/cps/templates/stats.html
+++ b/cps/templates/stats.html
@@ -78,7 +78,14 @@
       <th>Requests</th>
       <td>v{{versions['requests']}}</td>
     </tr>
-
+    <tr>
+      <th>SQlite</th>
+      <td>v{{versions['sqlite']}}</td>
+    </tr>
+    <tr>
+      <th>Pysqlite</th>
+      <td>v{{versions['pysqlite']}}</td>
+    </tr>
   </tbody>
 </table>
 
diff --git a/cps/ub.py b/cps/ub.py
index f5207f06..653454ce 100644
--- a/cps/ub.py
+++ b/cps/ub.py
@@ -7,7 +7,6 @@ from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy.orm import *
 from flask_login import AnonymousUserMixin
 import os
-import traceback
 import logging
 from werkzeug.security import generate_password_hash
 from flask_babel import gettext as _
diff --git a/cps/web.py b/cps/web.py
index 06930901..5d218ecc 100755
--- a/cps/web.py
+++ b/cps/web.py
@@ -1055,6 +1055,8 @@ def stats():
     versions['tornado'] = tornadoVersion
     versions['iso639'] = iso639Version
     versions['requests'] = requests.__version__
+    versions['pysqlite'] = db.engine.dialect.dbapi.version
+    versions['sqlite'] = db.engine.dialect.dbapi.sqlite_version
 
     return render_title_template('stats.html', bookcounter=counter, authorcounter=authors, versions=versions,
                                  categorycounter=categorys, seriecounter=series, title=_(u"Statistics"))