Hey JD
I have a 2.0 CRD UK spec which I purchased in April. I had no problems with the parking brake UNTIL I had it serviced last week. At the service, they tightened the handbrake so you could only pull it up 2 'clicks'.
After that, the first time I parked it on a hill, it stayed there quite happily for about half an hour then for no apparent reason, it started rolling down the hill, ending up hitting another car about 20 yards down the hill. From the damage to both cars (the other was a Corsa), it is evident that the Journey wasn't travelling more than a couple of miles an hour - so the handbrake must have been still partially engaged.
In the last 2 days, the handbrake has moved from only going up 2 'clicks' to 4 'clicks', so seems to be slipping rapidly.
I'm taking mine back to the dealer, coz I think there is a problem here. My bet is that the dealer will say there is no problem, but I think different - if the handbrake was OK, it should have either (1) held the car on the hill or (2) started creeping almost instantly. We'll see what happens....
Soksrus