So, yeah, all my buttons were working when I got home from the store today (around 730 pm). I didn't take it off the nightstand where it was until I picked it up again at 1100 pm. I typed in my password (which included using the "e" button), and it let me. I went to reply to an e-mail and noticed that it wouldn't let me type the letter "e" in a word. It was also being ridiculously slow.
Since the "e" button is required for the password to get on the phone, what can I do to fix this? No, it didn't get wet, nothing changed from point A to point B. I tried resetting it several times.