850 miles and mine are still squealing sometimes at slow stops. I notice it to be more consistent when the car is still cold. If it doesn't completely go away by 1200 miles, I'll have the dealer check it out. I also plan to do the brake bedding that another member (GregW) suggested, but have not done so yet because the manual says you shouldn't do hard breaking for the first few hundred miles.
Here is the link to Bedding in brakes that Greg provided:
http://www.zeckhausen.com/bedding_in_brakes.htm