Hi - recently, whenever I close the PC down, Outlook 2003 (not OE) won't close. The only way I can get rid of it is via the Task Manager and Processes. It isn't listed on the Applications tab. Also, quite frequently, there are several entries for the programme.
I've tried Detect and Repair and thought I'd solved the problem by unticking 'Microsoft Office Outlook plug in' in Kaspersky's Mail Anti Virus option.
I did use Sysinfo to remove several items from Start up, but nothing mentioned Outlook.
I had this problem with a sync program for my mobile phone which was keeping Outlook open. This happened a couple of years ago now and I regret I cannot remember the exact program or the fix so I haven't been much help but can sympathise.