Shuddering in drive with foot on brake!??

[RGC]

hmmmm started her up from cold and selected drive with foot on the brake and the car started shuddering,

it pulled away ok drove for a minute stopped at lights and with foot on brake and it was still doing it, after about a 15 minute drive everything was ok,

its never done this before i have only had the car 8 month and done about 3500 miles and this is the first issue around the transmission i have had!

is it time to sell on? or am i just playing russian roulette??

Richy