A user's Outlook 2010 program when it is opened will take over an hour to go through Verifying Data Integrity. When it does reach 100%, The program will open for a second and then start the Verifying Data Integrity over. We have tried using Scanpst.exe to scan the pst files and repair any damaged it found, run a repair on the Office Suite, open Outlook in Safe Mode, and with Outlook /cleanrules but it will not go beyond Verifying Data Integrity. We have tried scanning the OST file but it just hangs. Any assistance offered would be greatly appreciated.