[web2py] uploads folder is empty

[Alex]

I don't know why, but when I upload an image, the uploads folder is
empty !

In my table I can see  :
FieldStorage('800x480', 'a800x480.jpg', '\xff\x ..... xe0\x00')

In my view I'm doing this :
<img src="{{=URL('download', args=myTable.image)}}" />
{{=myTable.name}}

I can see the name of my image, but no image (that makes sense because
my uploads folder is empty....)

I'm on Linux, I did "chmod 777 uploads", but still same pb

Is there a configuration that I forgot to do ?


db.define_table('image',
  Field('name', length=45),
  Field('image', 'upload'),
)