It would be really useful if you could either fully exit X1 (without having to go into task manager to remove items that don't exit from the systray icon) or preferably be able to suspend access to files such as Outlook.PST so that you can run the Inbox Repair Tool.
Currently if you run the Outlook Inbox Repair Tool it can't access the PST files because it needs exclusive access but they are in use by X1.