jitaroo wrote:... i've been noticing that when I accelerate rashly the sign that has a car and slippery tracks under it turns on. Now at that point should I turn off vdc or should i just leave it as it is? When am I supposed to use VDC?
Even with the VDC off, you will get the car slipping sign when the car feels the wheels are spinning, that is just an indication to you (time to ease the throttle to regain grip, except if you want the tires to spin on purpose).
Like Nick, I like to turn it off at low speed as I find it a little bit too intrusive (but I like to have a little bit of fun where there is snow, so that may be the reason

).
As others as said, it is a safety feature to prevent the car from sliding, so it is better to keep it on. But when you are stuck in the snow, sand or mud, and you need to spin the tires to get out, you need to disable it by turning it off.