Even after adding the current patch in http://bugs.python.org/issue3651
there are many reference leaks.  This bug can be a placeholder for all
the reference leaks returned from:  
  ./python ./Lib/test/regrtest.py -R 3:2 -uall,-bsddb 

The current list is:

test_unittest leaked [124, 124] references, sum=248
test_array leaked [110, 110] references, sum=220
test_audioop leaked [75, 75] references, sum=150
test_binascii leaked [4, 4] references, sum=8
test_binhex leaked [4, 4] references, sum=8
test_codecs leaked [3, 3] references, sum=6
test_ctypes leaked [9, 9] references, sum=18
test_dbm leaked [194, 194] references, sum=388
test_dbm_gnu leaked [2, 2] references, sum=4
test_fcntl leaked [2, 2] references, sum=4
test_file leaked [8, 8] references, sum=16
test_fileio leaked [1, 1] references, sum=2
test_memoryio leaked [3, 3] references, sum=6
test_minidom leaked [5, 5] references, sum=10
test_mmap leaked [307, 307] references, sum=614
test_ossaudiodev leaked [2, 2] references, sum=4
test_pickle leaked [130, 130] references, sum=260
test_pickletools leaked [503, 503] references, sum=1006
test_pyexpat leaked [1, 1] references, sum=2
test_re leaked [4, 4] references, sum=8
test_site leaked [88, 88] references, sum=176
test_socket leaked [13, 13] references, sum=26
test_sqlite leaked [17, 17] references, sum=34
test_ssl leaked [82, 82] references, sum=164
test_struct leaked [5, 5] references, sum=10
test_unicode leaked [2, 2] references, sum=4
test_urllib2_localnet leaked [3, 3] references, sum=6
test_xmlrpc leaked [18, 18] references, sum=36
test_xmlrpc_net leaked [1, 1] references, sum=2
test_zlib leaked [10, 10] references, sum=20