I just have problem with my Outlook 2007. It’s getting slower, slower, slower, slower, and slower. And in last few days, it sent multiple emails to same recipient (especially when I sent email with big attachment). I check around and finally decide to give a try with it’s Service Pack 1 (for Microsoft Office 2007, but patch for Outlook also included there).
You can download it from here.
I think I can feel some improvements in my Outlook. It’s a little bit faster (my PST size around 1.8 GB). We will see is this for real or just a “hype” from myself 😉