This just started a few days ago, but any time I hit the Control key on the keyboard, Outlook launches itself. This is not a keyboard shortcut because it isn't part of a combination. Just hitting the Control key by itself will cause this to happen. It's very annoying because I use the copy and paste keyboard shortcuts a lot. I've looked at the Properties for my Outlook 2007 icons and in the "Shortcut key" box, they all say "None." If I hold down the Control Key, then I get a dialog box that says "Outlook has detected that you are holding down the CTRL key. Do you want to start Outlook in safe mode?"
I ran Office Diagnostics and it found no problems.