1) The water in the drip tray is from the release of pressure once brewing is finished ie normal.
2) Sounds like there might be an issue there with a leaky seal or valve etc might be worth getting fixed under warranty.
3) This is the machines way of dropping the temperature of the thermoblock down to brew temp from steaming temp, not very elegant but effective.
I have had a play with this machine for a few days over easter and it is a good machine for the price, are you using the unpressurised baskets and if so are you able to grind fine enough to get 30 mls in 30 secs? I couldnt but apparently there is an easy fix to get it to grind a bit finer.
Hope that helps