Before you begin any change, scan or repair, make sure you can survive the total wipe of outlook.
How long has it been since you compacted the outlook database?
Did you try Outlook's safe mode? (not the OS, bu Outlook.)
Outlook used to take me about 3 seconds to load. Suddenly, it is taking me 3 minutes. I've rebooted several times but doesn't help. When Outlook finally opens, all of its email functions work fine. Everything else on PC works fine. I have Windows 7 (32 bit). What's going on and how do I fix it?