Can Vince or Olaf report on the results of the new policy so far? Have you seen an increase in performance and speed, like you were anticipating? If there has been one it's certainly not noticeable. Also, could you please explain exactly how merely locking threads improves performance? If they're still there, so are the issues. How can you hope to achieve anything if you don't go all the way and delete the threads? Have a spine, or don't attempt something like this. It's nonsensical, come on.
