diff --git a/addons/web/controllers/main.py b/addons/web/controllers/main.py
index ec80c4924cb..8f1148f4dfa 100644
--- a/addons/web/controllers/main.py
+++ b/addons/web/controllers/main.py
@@ -3,6 +3,7 @@
 import ast
 import base64
 import csv
+import functools
 import glob
 import itertools
 import logging
@@ -35,7 +36,9 @@ from openerp.tools.translate import _
 from openerp.tools import config
 from openerp import http
 
-from openerp.http import request
+from openerp.http import request, serialize_exception as _serialize_exception
+
+_logger = logging.getLogger(__name__)
 
 #----------------------------------------------------------
 # OpenERP Web helpers
@@ -89,6 +92,22 @@ db_list = http.db_list
 
 db_monodb = http.db_monodb
 
+def serialize_exception(f):
+    @functools.wraps(f)
+    def wrap(*args, **kwargs):
+        try:
+            return f(*args, **kwargs)
+        except Exception, e:
+            _logger.exception("An exception occured during an http request")
+            se = _serialize_exception(e)
+            error = {
+                'code': 200,
+                'message': "OpenERP Server Error",
+                'data': se
+            }
+            return werkzeug.exceptions.InternalServerError(simplejson.dumps(error))
+    return wrap
+
 def redirect_with_hash(url, code=303):
     redirect_code = "<html><head><script>window.location = '%s' + location.hash;</script></head></html>" % url
     if request.httprequest.user_agent.browser == 'msie':
@@ -1225,6 +1244,7 @@ class Binary(http.Controller):
         return open(os.path.join(addons_path, 'web', 'static', 'src', 'img', image), 'rb').read()
 
     @http.route('/web/binary/saveas', type='http', auth="user")
+    @serialize_exception
     def saveas(self, model, field, id=None, filename_field=None, **kw):
         """ Download link for files stored as binary fields.
 
@@ -1258,6 +1278,7 @@ class Binary(http.Controller):
                  ('Content-Disposition', content_disposition(filename))])
 
     @http.route('/web/binary/saveas_ajax', type='http', auth="user")
+    @serialize_exception
     def saveas_ajax(self, data, token):
         jdata = simplejson.loads(data)
         model = jdata['model']
@@ -1291,6 +1312,7 @@ class Binary(http.Controller):
                 cookies={'fileToken': token})
 
     @http.route('/web/binary/upload', type='http', auth="user")
+    @serialize_exception
     def upload(self, callback, ufile):
         # TODO: might be useful to have a configuration flag for max-length file uploads
         out = """<script language="javascript" type="text/javascript">
@@ -1306,6 +1328,7 @@ class Binary(http.Controller):
         return out % (simplejson.dumps(callback), simplejson.dumps(args))
 
     @http.route('/web/binary/upload_attachment', type='http', auth="user")
+    @serialize_exception
     def upload_attachment(self, callback, model, id, ufile):
         Model = request.session.model('ir.attachment')
         out = """<script language="javascript" type="text/javascript">
@@ -1595,6 +1618,7 @@ class ExportFormat(object):
 class CSVExport(ExportFormat, http.Controller):
 
     @http.route('/web/export/csv', type='http', auth="user")
+    @serialize_exception
     def index(self, data, token):
         return self.base(data, token)
 
@@ -1632,6 +1656,7 @@ class CSVExport(ExportFormat, http.Controller):
 class ExcelExport(ExportFormat, http.Controller):
 
     @http.route('/web/export/xls', type='http', auth="user")
+    @serialize_exception
     def index(self, data, token):
         return self.base(data, token)
 
@@ -1678,6 +1703,7 @@ class Reports(http.Controller):
     }
 
     @http.route('/web/report', type='http', auth="user")
+    @serialize_exception
     def index(self, action, token):
         action = simplejson.loads(action)