Your car is 11-12 years old, the rubber parts will get stiff and maybe crack. It sounds like you have a split hose or a leak since you see more smoke.
Check for leaks, read this "how to", it will explain a lot
http://www.myturbodiesel.com/1000q_how_to/multi/boostleaks.htm
Check for leaks, read this "how to", it will explain a lot
http://www.myturbodiesel.com/1000q_how_to/multi/boostleaks.htm