Update: Another member (ray_futbol) has an e90 manufactured/produced after 11/31/2008, AND YET he's experienced the engine ticking - see link below:
So, anyone have thoughts on this? Could it be that BMW continued to install faulty engine heads after 11/31/2008? Or worse, that the redesigned head is not the final fix
NOTE: I'm thinking of purchasing an used e90...hence the concern/question...