>I have fine tuned the IIS application pool setting in the last two days and the current settings seem to have increased a lot the performance of the application. I have enabled 5 worker processes and adjusted some settings. So far, after 5 hours, the application responds much faster and I haven't seen one transaction that was taking too long. The average respond time is now at 0.35 second.

Yes, UT is much snappier. Good job.