@mcgheen2
Oddly enough, I did, in fact, have an update for Extras+Info. Followed your advice. Hoping the issue is resolved. Thanks.
Update: Well, it does appear that this "fix" has a significant impact on the sensitivity issue. I've been using my 1520 for the past hour and a half without a single issue. Pretty pleased. Will update again if anything changes.
Update 2: Twelve hours later, and I have not experienced the sensitivity issue again. Is it due to the update or my adapting to the issue???
This is my second 1520. I took the first one back to the AT&T store this past Wednesday and exchanged it for the one I have now. The sensitivity issue came with this device as well.