Hi! I lost too much time because of strange pickleing issues, so I think it would be nice to share and save you some time.
If you are going to use mod_wsgi remember to read the following first (not what I did): http://code.google.com/p/modwsgi/wiki/IssuesWithPickleModule The essence is put every class definition that could endup in to the session, inside modules and out of models or controllers. You have been warned! ;-) mic
