l10n_client doesn't list my content for translation

Dear all,

Maybe I got this all wrong, but what I understood from the screencasts is that the localization client can help me translate the content I created for my site (like pages and stories) from English to another language. Unfortunately, I can't get this to work.

This is what I did:

- In /admin/build/modules I have the localization module (6.x-1.6) enabled
- In /admin/user/permissions I set the correct permissions for the "admin" user
- In /admin/settings/language, I set up two languages for my site: English ("en", marked as default) and Portuguese, Brazil ("pt-br")
- I created a page in English with title "Test of localization client module" and body "This text is in English";
- The page in English (/en/node/44) shows fine, as also in Portuguese (/pt-br/node/44); the "TRANSLATE TEXT" button shows up only in the Portuguese page; so far, so good...
- When I click on "TRANSLATE TEXT", the translation interface shows up, but the text I created is not available for translation - only the Drupal interface text is listed (like "Add", "Add alias", "Add block", ...)

I also tried this with the image gallery page (/image), but the same thing happens there (the name or description of the gallery doesn't appear in the list of translatable strings).

Any ideas of what I might be doing wrong?

Thanks!