Somehow, I think one of my kids installed a virus on my system.
Quite similar to one I had before, so I just did what I did before, and it worked.
Since then, I've lost some functionality.  MSN mail popup comes up, I click it, and it's supposed to launch IE with Hotmail...it doesn't.  If you check Windows Task Mgr you can see an IE process come up for just a couple seconds, then it's gone.  However, you can launch a IE window on it's own and navigate to Hotmail just fine.
I also no longer have control over videos in Windows Media Player.  Can't stop them, fast forward, or even play again after they're finished.
There's likely other things that I haven't noticed yet.
I already tried repairing the install of Messenger.  Didn't help.