OS X V10.6 Snow Leopard :: Deleted Message In Outlook / H2 Delete Permanently From Computer

I have on tow differnt Mac' both running 10.8.6 and Office 2011.I get a message and I delete it from the inbox (POP accounts with my ISP, on my own domain), and next from the deleted items folder. so far so good, message (should be) gone forever. Now if I do a search (via the Mac find function) for the message it shows up as being in:/Users/e/ Documents/Microsoft User Data/Office 2011 Identities/Name of User/Data Records/Messages/ 0T/0B/0M/13K/x00_13558.olk14Message. The last item being the message.I can open it by double clicking and there it is in its full glory. If I do a search within Outlook it shows up but has no folder located to it, so I suppose it 'finds' it in the same folder where the Mac finds it.Using the find inside Outlook I can find them, delete them again and find them again, etc. Now, not only does this bloat the storage space needed (account now bloated to 1.5 Megabite), but it is also unpleasant (security) to know that they are still there.After all why otherwise delete anything?is this normal, and the second question is, how to set Outlook up that it removes these messages permanently? I had  a thread about this in the MS Outlook forum but had no luck there. url...it be interesting to hear if any of you can recreate the problem, to exclude it being a unique problem on both my machines.

- Create new account in Outlook (same problem)

- Rebuild database

- Upgrade to latest Outlook version, followed by again

- Creating a new account in Outlook (same problem)

- Rebuilding the database

Info:
MBP, MM, MBP - 10.6 + Windooz XP on a hard partition