I bought this car in August of 2006 with ~60k and this is a problem that's existed since I've had it, although it seems to be getting slightly worse recently. Basically what happens is when I take off from a stop at a normal rate, the car shakes and shudders violently. It's almost as if I don't know how to drive a manual, even though I've been doing so for 12 years. What's interesting is that this only really occurs after a period of spirited driving, or after I've been on the highway for a while and then exit to stop and go traffic (this is more common). It doesn't ever happen within the first 10-15 minutes or so of driving, or if I'm running short errands. I can make it not happen by bringing the revs higher than I normally would and riding the clutch, or giving it almost no throttle at all and taking off from a near stall. Anybody encounter this before? Advice? Thanks in advance.