Clutch Actuator knocking & burning smell

Ive got a Zafira B 1.8 easytronic, when starting the engine there
is a single knock sound that i have been told by a main dealership that
it might be the clutch actuator. Anyone else had this problem??? Also
when the heater is on whether i want it hot or cold after approx
5-10mins all i can smell is burning it does disappear but im not
convinced this is normal.

id say theres something wrong with heater bud my old vec did the same it blew it resistor pack easy enough fix does all four motor settings work

All the heater settings work car has been into main dealership 3 times and they still havent fixed my original problem, thankfully its still under warranty, but they are getting a bit funny with me always taking my car back. The burning smell doesnt last for long but with 5 kids and me and oh in the car its just not very nice and not what i ecpect everytime i want to use the heater.

i can see your point mate but keep taking it in till they sort it