diff --git a/rhodecode/config/middleware.py b/rhodecode/config/middleware.py
--- a/rhodecode/config/middleware.py
+++ b/rhodecode/config/middleware.py
@@ -32,7 +32,7 @@ from pyramid.config import Configurator
 from pyramid.settings import asbool, aslist
 from pyramid.wsgi import wsgiapp
 from pyramid.httpexceptions import (
-    HTTPError, HTTPInternalServerError, HTTPFound)
+    HTTPException, HTTPError, HTTPInternalServerError, HTTPFound)
 from pyramid.events import ApplicationCreated
 from pyramid.renderers import render_to_response
 from routes.middleware import RoutesMiddleware
@@ -226,7 +226,7 @@ def error_handler(exception, request):
 
     base_response = HTTPInternalServerError()
     # prefer original exception for the response since it may have headers set
-    if isinstance(exception, HTTPError):
+    if isinstance(exception, HTTPException):
         base_response = exception
 
     def is_http_error(response):
diff --git a/rhodecode/lib/auth.py b/rhodecode/lib/auth.py
--- a/rhodecode/lib/auth.py
+++ b/rhodecode/lib/auth.py
@@ -1268,6 +1268,7 @@ class NotAnonymous(object):
         return get_cython_compat_decorator(self.__wrapper, func)
 
     def __wrapper(self, func, *fargs, **fkwargs):
+        import rhodecode.lib.helpers as h
         cls = fargs[0]
         self.user = cls._rhodecode_user
 
@@ -1277,8 +1278,6 @@ class NotAnonymous(object):
 
         if anonymous:
             came_from = request.path_qs
-
-            import rhodecode.lib.helpers as h
             h.flash(_('You need to be a registered user to '
                       'perform this action'),
                     category='warning')
@@ -1315,6 +1314,7 @@ class HasAcceptedRepoType(object):
         return get_cython_compat_decorator(self.__wrapper, func)
 
     def __wrapper(self, func, *fargs, **fkwargs):
+        import rhodecode.lib.helpers as h
         cls = fargs[0]
         rhodecode_repo = cls.rhodecode_repo
 
@@ -1325,7 +1325,6 @@ class HasAcceptedRepoType(object):
         if rhodecode_repo.alias in self.repo_type_list:
             return func(*fargs, **fkwargs)
         else:
-            import rhodecode.lib.helpers as h
             h.flash(h.literal(
                 _('Action not supported for %s.' % rhodecode_repo.alias)),
                 category='warning')
@@ -1349,7 +1348,7 @@ class PermsDecorator(object):
         from pyramid.threadlocal import get_current_request
         pyramid_request = get_current_request()
         if not pyramid_request:
-            # return global request of pylons incase pyramid one isn't available
+            # return global request of pylons in case pyramid isn't available
             return request
         return pyramid_request
 
@@ -1360,6 +1359,7 @@ class PermsDecorator(object):
         return _request.path_qs
 
     def __wrapper(self, func, *fargs, **fkwargs):
+        import rhodecode.lib.helpers as h
         cls = fargs[0]
         _user = cls._rhodecode_user
 
@@ -1375,10 +1375,9 @@ class PermsDecorator(object):
             anonymous = _user.username == User.DEFAULT_USER
 
             if anonymous:
-                import rhodecode.lib.helpers as h
                 came_from = self._get_came_from()
                 h.flash(_('You need to be signed in to view this page'),
-                        category='warning')
+                               category='warning')
                 raise HTTPFound(
                     h.route_path('login', _query={'came_from': came_from}))
 
@@ -1970,3 +1969,5 @@ def get_cython_compat_decorator(wrapper,
         return wrapper(func, *args, **kwds)
     local_wrapper.__wrapped__ = func
     return local_wrapper
+
+
diff --git a/rhodecode/lib/middleware/error_handling.py b/rhodecode/lib/middleware/error_handling.py
--- a/rhodecode/lib/middleware/error_handling.py
+++ b/rhodecode/lib/middleware/error_handling.py
@@ -21,7 +21,8 @@
 
 import logging
 from pyramid import httpexceptions
-from pyramid.httpexceptions import HTTPError, HTTPInternalServerError
+from pyramid.httpexceptions import (
+    HTTPRedirection, HTTPError, HTTPInternalServerError)
 from pyramid.threadlocal import get_current_request
 
 from rhodecode.lib.exceptions import VCSServerUnavailable
@@ -53,7 +54,7 @@ class PylonsErrorHandlingMiddleware(obje
 
     def is_http_error(self, response):
         # webob type error responses
-        return (400 <= response.status_int <= 599)
+        return 400 <= response.status_int <= 599
 
     def reraise(self):
         return self._reraise
@@ -73,9 +74,16 @@ class PylonsErrorHandlingMiddleware(obje
             if self.is_http_error(response):
                 response = webob_to_pyramid_http_response(response)
                 return self.error_view(response, request)
-        except HTTPError as e:  # pyramid type exceptions
+        except HTTPRedirection as e:
+            # pyramid type redirection, with status codes in the 300s
+            log.debug('Handling pyramid HTTPRedirection: %s', e)
+            return e
+        except HTTPError as e:
+            # pyramid type exceptions, with status codes in the 400s and 500s
+            log.debug('Handling pyramid HTTPError: %s', e)
             return self.error_view(e, request)
         except Exception as e:
+            log.debug('Handling general error: %s', e)
 
             if self.reraise():
                 raise
@@ -89,6 +97,8 @@ class PylonsErrorHandlingMiddleware(obje
 
 
 def webob_to_pyramid_http_response(webob_response):
+    log.debug('response is webob http error[%s], handling now...',
+              webob_response.status_int)
     ResponseClass = httpexceptions.status_map[webob_response.status_int]
     pyramid_response = ResponseClass(webob_response.status)
     pyramid_response.status = webob_response.status