I scan my registry daily with Registry Mechanic and CCleaner. Yesterday, I scanned and repaired the few problems they discovered. Then I downloaded Registry Booster from one of the tech spot sites as it offered a free registry scan. Even though Registry Mechanic and CCleaner found no problems, Registry Booster found 440 problems!! 1. Why would RB find 440 problems when RM and CC found none? 2. Should I be concerned about this -- to the extent that I should purchase RB? Thanks.