I have updated to the latest version of WordPress (2.8.2) and now my drag and drop function for the widgets does not work any longer. It worked before the upgrade. A quick Google search revealed a way around this problem. Read the detailed article about widgets accessibility mode.
- select ‘Widgets’ from the sidebar, once the screen has loaded
- select ‘Screen Options’ on the top right and
- select ‘Enable Accessibility Mode, now widgets can be added or removed from the sidebar by selection the ‘add’ option.