[Fixed]-Django populate() isn't reentrant on multilanguage setup with different domains

This doesn’t look like a Django problem, but a misconfiguration of mod_wsgi — it looks like your applications may be running in the same interpreter and conflicting.

How is your Apache/mod_wsgi configured? Of special interest is that daemon mode should be turned on and the daemon separate for each site. (See that directive’s docs.)

Also, I’d suggest looking into serving your app with something else than Apache/mod_wsgi — Nginx + uWSGI is my weapon of choice.