I was having this problem too. If you grab the file
that''s on http://script.aculo.us/scripts/dragdrop.js
it seems to work just fine. Doing a Diff against the
two provided these results (where dragdrop.js is on
script.aculo.us and dragdrop2.js is from SVN)...
[shounenalice@walden scripts]$ diff dragdrop.js
dragdropsvn.js
224c224
<   notify: function(eventName, draggable) {  //
''onStart'', ''onEnd''
--->   notify: function(eventName) {  // ''onStart'',
''onEnd''
226c226
<       this.observers[i][eventName](draggable);
--->       this.observers[i][eventName]();
246,247c246
<       zindex: 1000,
<       revert: false
--->       zindex: 1000
282,283c281,282
<       this.originalY = this.element.offsetTop  -
this.currentTop()  - this.originalTop;
<       this.originalX = this.element.offsetLeft -
this.currentLeft() - this.originalLeft;
--->       this.originalY = this.element.offsetTop  -
this.currentTop();  - this.originalTop;>       this.originalX = this.element.offsetLeft -
this.currentLeft(); - this.originalLeft;
296c295
<       Draggables.notify(''onEnd'', this);
--->       Draggables.notify(''onEnd'');
298,301c297
<       var revert = this.options.revert;
<       if(revert && typeof revert == ''function'')
revert = revert(this.element);
<
<       if(revert && this.options.reverteffect) {
--->       if(this.options.revert &&
this.options.reverteffect) {
337c333
<         Draggables.notify(''onStart'', this);
--->         Draggables.notify(''onStart'');
Hope this of help to someone who can debug it.