I got an original A855 to have internet access for my week in New York a couple of months ago. Gave up the phone service after a month, but am happy to have something smaller than my laptop around the house. (We are so spoiled.) I've had it on silent except for phone calls from the start, but tonight it started "dinging" on every icon selection or change of state. It's still set to silent, but I now can't shut it up. I did shut it down and restart, but that changed nothing.
So I'm a frustrated, light user. If it keeps misbehaving like this, I'll be a very light user.