Advanced download extension DownThemAll! has released an updated version with new features, refinements, bug fixes, speed limits, mirror management, support for Firefox 4.0, and better platform/O.S. integration.
Note 1: A helpful about page will open in a new tab for those who may be new to using the DownThemAll! extension (about:downthemall).
Note 2: You will need to add the desired toolbar button(s) to your browser’s UI using the UI Customization Window.
Download DownThemAll! [Mozilla Add-ons]