Have you looked at:

Here's the chunk I used:

  eval
  {
    delete_package($packageName);
    # Have to remove the package from the %INC hash so that require wi
+ll
    # actually load the package again.
    delete($INC{$packageFile});  
  };
[download]

I can't say that I ever got package dropping to work 100%. It doesn't free up memory for the package.

Hope this helps.