When i tray to flag out-of-date packages i have this error:

Environment:

Request Method: POST
Request URL: http://parabolagnulinux.org/packages/libre/i686/iceweasel-libre/flag/

Django Version: 1.3.1
Python Version: 2.7.2
Installed Applications:
['django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.messages',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.sitemaps',
 'django.contrib.admin',
 'django.contrib.markup',
 'django.contrib.staticfiles',
 'south',
 'main',
 'mirrors',
 'news',
 'packages',
 'todolists',
 'devel',
 'public',
 'releng',
 'visualize',
 'retro']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.http.ConditionalGetMiddleware',
 'django.middleware.doc.XViewMiddleware')

Traceback:
File "/usr/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  111.                         response = callback(request, *callback_args, **callback_kwargs)
File "/usr/lib/python2.7/site-packages/django/views/decorators/cache.py" in _wrapped_view_func
  79.         response = view_func(request, *args, **kwargs)
File "/srv/http/web/packages/views/flag.py" in flag
  76.             perform_updates()
File "/usr/lib/python2.7/site-packages/django/db/transaction.py" in inner
  217.                 res = func(*args, **kwargs)
File "/srv/http/web/packages/views/flag.py" in perform_updates
  74.                 flag_request.save()
File "/usr/lib/python2.7/site-packages/django/db/models/base.py" in save
  460.         self.save_base(using=using, force_insert=force_insert, force_update=force_update)
File "/usr/lib/python2.7/site-packages/django/db/models/base.py" in save_base
  553.                     result = manager._insert(values, return_id=update_pk, using=using)
File "/usr/lib/python2.7/site-packages/django/db/models/manager.py" in _insert
  195.         return insert_query(self.model, values, **kwargs)
File "/usr/lib/python2.7/site-packages/django/db/models/query.py" in insert_query
  1436.     return query.get_compiler(using=using).execute_sql(return_id)
File "/usr/lib/python2.7/site-packages/django/db/models/sql/compiler.py" in execute_sql
  791.         cursor = super(SQLInsertCompiler, self).execute_sql(None)
File "/usr/lib/python2.7/site-packages/django/db/models/sql/compiler.py" in execute_sql
  735.         cursor.execute(sql, params)
File "/usr/lib/python2.7/site-packages/django/db/backends/util.py" in execute
  34.             return self.cursor.execute(sql, params)
File "/usr/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py" in execute
  44.             return self.cursor.execute(query, args)

Exception Type: IntegrityError at /packages/libre/i686/iceweasel-libre/flag/
Exception Value: null value in column "ip_address" violates not-null constraint