This is because a pst-file is a database and the white space created by
deleted items is not directly returned to the disk after deleting something.
It will truncate itself over time or you can force it via Compact Now;
right click on the root of your folder set-> Properties-> button Advanced->
button Compact Now
As you've removed over 5GB of data, this process could take a considerable
amount of time. You might want to do this at night instead.
--
Robert Sparnaaij [MVP-Outlook]
Coauthor, Configuring Microsoft Outlook 2003
http://www.howto-outlook.com/
Outlook FAQ, HowTo, Downloads, Add-Ins and more
http://www.msoutlook.info/
Real World Questions, Real World Answers
-----
"Joel" <(E-Mail Removed)> wrote in message
news:7D1D9366-240A-4FDC-B34F-(E-Mail Removed)...
> My Outlook 2007 folders were getting a bit massive (>7Gig) so I thought I
> would backup all my older mail to a backup folder which seemed to go
> according to plan. If I now click on the folder size option it tells me
> that
> they are a more management 700MB, the problem is that my outlook.pst file
> is
> still over 7gb (along with the 5.5GB backup.pst file).
>
> Any idea why there is this discontinuity?