I've upgraded from Drupal 6 to Drupal 7.7 successfully, but I've only had one problem. The title of all nodes are displayed correctly, but the content is not displayed on the page.
Checking the database tables I found field_data_body field_revision_body and content still there.
When I try to create a new content, all is well, the language field for this tables is 'und'. I was tried to changing this value, but doesn't work...
Does anyone help me?