gistfile1.py

In [1]: from petitions.models import *

In [4]: sum(p.signature_set.count() for p in Petition.objects.all())
Out[4]: 1722

In [5]: sum(p.signature_set.count() for p in Petition.objects.all())
Out[5]: 1722

In [6]: from django.db import connection, transaction

In [7]: cursor = connection.cursor()

In [8]: cursor.execute("select count(*) from petitions_blipuser_signed_petitions")

In [9]: signed = cursor.fetchone()   

In [10]: signed
Out[10]: (1096L,)