Since this appears to have been a CCV issue, I thought I'd post the fun little DIY diagnostic tests, as well as BMW's Service Information Bulletin 110803 parts list for rehabbing your CCV:

1.
At warm idle, place small plastic freezer storage bag on its side over the oil fill hole. If the bag sits on top or gets slightly sucked in, ~1", the
valve is good. If the bag gets significantly sucked in the hole the valve is stuck open and bad.

2.
With the engine off and cold, carefully remove the hose at the valve cover front corner. Blow hard into the hole. You should hear oil bubbling in the oil pan. If you don't hear the bubbling, the top or bottom hose is likely cracked. The bottom hose often breaks just below the valve connection. There can also be cracks in the other two hoses.

Download the July, 2010 update to SIB 110803 HERE.