Okay, it was just an old and obsolete custom security with my wikitools module, that prevents the code to access an external website under debug mode... It thus returned a 404 code, and the wikitools api was forcing the connection with this 5 seconds step pattern...
Let's rock ! :-) BTW : I figured out when the bugs come from by running the debug django server on my production server. Quitting it after realizing it produced the same error dumped a very useful backtrack message... -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/78c2c4ff-a7b6-4582-90d9-b511524baf0e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

