Something is not working properly with your hosting environment.
My site has stopped working, again.
Over the last three days I was told the problem lies with somebody else misbehaving (I was getting err. 111, connection refused).
Today a proxy was reset and my site came back to life.
For a good 30mins. Then it went belly up again.
The very same site, which was working perfectly, now gives:

JSONDecodeError at / Expecting value: line 1 column 1 (char 0) Request Method: POST Request URL: Django Version: 1.3.5 Exception Type: JSONDecodeError Exception Value: Expecting value: line 1 column 1 (char 0) Exception Location: /usr/local/lib/python2.7/site-packages/simplejson/ in raw_decode, line 393 Python Executable: /usr/local/bin/uwsgi Python Version: 2.7.3 Python Path: ['/var/www', ...

Any ideas???? To me, this does not look like something related to traffic and proxies.
Thank you in advance for any help

See my response on the other thread