Alert - pop-up box

I was playing with one of the Alerts in one of my profiles.  I was causing it create a pop-up box.    Now I can't get ride of the box that is popping up.

I reset the alert to the defaults. I even deleted the profile.  I can't tell where this pop-up is coming from.

I reviewed the SLTrace and it didn't offer any clues.  Wondering if you have ideas where I can look?  Thanks!