When creating a new subfolder under Inbox Outlook freezes up. Have to end task and reopen Outlook. Once I reopen Outlook the subfolder is there. I can create a subfolder under any other main folder without the lock up, and can create a subfolder via the web interface for Outlook with no issue at all. Have created a new profile, deleted .ost files and let them rebuild and have uninstalled and installed Office. The problem is still the same. Any ideas?