With 1.41. + 1.8RC1 In IE8 I get very often "Stop running this script? It's slow..." and only thing that makes it go away is to stop loading UI totally.

I get these breakpoints from IE debug console  (in varying order) when stopping the script:

  Operation aborted
  jquery-1.4.1.js, line 3629 character 7

  Operation aborted
  jquery-1.4.1.js, line 3628 character 35

  Operation aborted
  jquery-1.4.1.js, line 3628 character 23

After I stop the "slow scripts", my script still results good data (drags/drops, hovers and live's works and all).

So it seems that problem is just an endless loop in jQuery 1.41 with for-loop

// Make sure that the results are unique
                for ( var n = length; n < ret.length; n++ ) {
                    for ( var r = 0; r < length; r++ ) {
                        if ( ret[r] === ret[n] ) {
                            ret.splice(n--, 1);
                            break;
                        }
                    }
                }