I've got what looks like a serious problem with the GTA.

Driving to a wedding the other day I noticed a bit of smoke on hard acceleration so I decided to take it easy. Starting the car to drive back from the reception in the evening the idle was very erratic, I put it down to the coldness but still took it easy on the drive home.

Went to start the car yesterday and it started fine then stalled after a few seconds. I was in a rush so didn't investigate, just quickly moved to Plan B (train).

I've just had a go again now and it's not good. There's white/blue smoke (oil presumably) coming out the exhaust, you can keep it from stalling with the throttle, but it definately isn't firing on all cylinders.

I've always treated the car very well, ensuring it warms up fully before using too many revs, always checking the oil before long journeys (and I only use Selenia). I usually drive to conserve fuel rather than go fast too so it's not been abused at all.

Anyone got any ideas as to what it might be?
If it's not one thing, it's another with my car

I suppose the only good thing is that I didn't decide to sell it last week because I would have had a very angry new owner to deal with!