I just wanted to let everyone know (even Toodledo's guys), that there's a problem using AddBlockPlus addon with Toodledo :
the "add task" button, in the lower right corner of the green box we fill when creating a new task, is blocked.
So it is not possible to create a new task without disabling AddBlockPlus.
You can tell the Addblock addon not to filter that, but I am not at my computer now, so I can't tell you exactly how. I know someone reported this a month or two ago, but I'm not sure if Toodledo ever looked into why Addblock would do that.