Comment 2 for bug 876810

Seems this is the root cause: http://bugs.python.org/issue11489

e.g. this script fails:

#!/usr/bin/python
import simplejson
import binascii

origstr = binascii.unhexlify('EDA588C2A36C6C6F')
z = simplejson.dumps(origstr)
print z
y = simplejson.loads(z)
print y