Hi there,
I have made another test of uploading a small picture file in the activity flow, and had a look at the Firefox web developper console. I can see the following error in the console, after posting the note (including the picture that does not show) :
POST http://www.site-des-jobert.org/activity/upload/ => HTTP/1.1 404 Not Found.
That's why it is not able to upload the file onto the website. Is there's a apache rewrite issue ? Otherwise everything works fine.
I made a "chmod -R 770" on all directories/files to be sure it is not a permission issue.
Thanks for helping me if you can.