Heads Up!
Tuesday’s (7-23-13) release by Microsoft (via Windows’s Update) of the Office 2010 "SP2 Update" has caused issues with the Norton Anti-Spam COM Add-In for Outlook. After the SP2 update is applied, every time Outlook is started, a new folder is automatically created with the same name:
"the file so that changes to the file will be reflected in your item #." (where # will be an incrementing number for each new folder created on each subsequent Outlook startup/invocation.)
These "ghost folders" only seem to occur in any additional data files Outlook has opened - i.e. Any extra “.OST” and/or “.PST” datafile such as “Archive.PST”, but not in the default mail delivery datafile structure(s)
FWIW; I found that going into Outlook options and un-checking the Norton Anti-Spam COM Add-In fixes the problem. After disabling the Add-in and closing/re-opening Outlook, the "ghost folders" can be deleted by right-clicking and selecting "Delete" from the context menu.
Kind Regards,
John
EDIT - Further clarification on symptom & work-around remedy.