G'day Arnie,

1. No sound in either version, but I do have sounds in other apps (eg Civilisation, iTunes).
2. Maybe a bit less rare - takes the fun out of trying to collect!
3. Before upgrading there used to be a room full of chemicals. Every so often a message would appear from the EPA (Environmental Protection Agency) saying you had to pay a fine for the chemicals in the house. That message still appears even when the room has been upgraded and all chemical removed. It's happened twice since upgrading the whole house, and each time the occupants get itchy and need to be medicated...
4. Boring!

Thanks,
Gammo