ford focus (y reg) faulty stereo and rear windscreen heater?

I have a ford focus 1.6 zetec y reg with 70,000 on the clock, recently the stereo has stopped working (it still has power to it) there is no display and it will not work. I know it has power to it as the red led blinks away. The rear windscreen heater also has stopped working when I press the button the yellow light blinks and goes off.

Finally to top it all off the clocks in the car (heat, revs, mileage and petrol) does not kick in until approximately 30 seconds after starting the car.

I have checked all the fuses but they all seem to be working fine, what can be causing this?