urgent help needed!!

[Triparti]

hiya,

i have a 307 1.6 s hdi on a 2005 plate, just done 109k, serviced 3 months ago. now i have this major problem. when the car is idle for a few minutes and i then drive off, my car smokes like there is no tomorrow but then stops smoking after a a minute or 2...

i have opened up the bonnet to check for any susceptible problems and i've notice oil on the pipe which connects to the cat i believe...now to further check if i am right....i left the car running for about 10mins...i started to see oil leaking out from the left side of the connector which connects the turbo...erm...where the seal/connector is on the left side...there is also a nut/screw with a pipe that goes down somewhere...it's leaking from that area...

HAS MY TURBO GONE??

WHAT CAN I DO TO SORT THIS OUT???