Some more info for my still happening stalling problem, I have kinda found a pattern for it:
The stalling problem is much worse if:
1. The Air Con is OFF
and / or
2. The fuel level is low (last 15 litres left in tank)
What happens is when the car coming to a stop, or close to it, as the engien revs back to the normal idle Rev, it would occasionally "dip" below the idle, it would appear that then ECU then tries to pick the rev back up again when that happens. The car idles much lower however when the AC is off, so when the dip happens the car stalls before the engine can be brought back above idle. Low fuel level also causes it as well...
The car almost never stalls when the car have a good amount of fuel and the AC is on.
The fuel system have been flushed and so is the oil line.
I don't think it is the gearbox, but then I am not sure whatelse it could be...
Any ideas guys?