I usually don’t like to promote every little thing that Microsoft releases, but when I see something that is really worth downloading, I like to point it out.  Office 2007 Service Pack 2 is out and downloadable here.  If you are running Office 2007 I highly recommend installing this particular Service Pack.  The performance and reliability fixes for Outlook are very good.  I have been running a beta of this Service Pack for a bit and it fixed the “Your Outlook data file was not closed properly” issue.  I have also noticed that Outlook has been much more responsive and reliable.  Well worth the 260 MB download.