We recently bought a couple of new computers.  They are HP Pro 3500 Towers running windows7 pro 64bit.  They both have identical specs and show identical Windows Experience index numbers of 4.6.  Both have had all current windows updates, software updates, and are running Laserfiche Client Version 9.0.2.671.  On one computer Laserfiche scanning can manage about 500 pages per hour, on the other computer, with identical installations, it barely can manage 100 pages per hour.  I have tried swapping scanners, to see if it was an issue with one individual scanner, but this did not resolve.  I have tried clearing temp files, and disabling antivirus on both machines.  One machine still runs significantly slower than the other machine.

Any ideas on how to fix?