If you are using Ubuntu Oneiric and Dropbox at the same time, you will find that the Nautilus Dropbox extension does not work as well as intended. While the Dropbox daemon is working fine and it will sync all files you place in the Dropbox folder, the sync icon and the Dropbox contextual menu is no longer there. This means that you can’t see whether the sync is successful or not and also access Dropbox feature, particularly the public link and shareable link, from the context menu. Here’s how you fix it (and it is incredibly simple).
The reason for this is because the Dropbox installer installs itself into the Nautilus extensions 2.0 folder while Nautilus 3.x is using the extensions 3.0 folders for the icons and context menu. To fix this, we just have to create a symlink between the respective files in extensions 2.0 and 3.0.
Open a terminal and type:
That’s it. Open your Dropbox folder and you should see the sync icon and the Dropbox entry in the context menu.