It has been a few months since I installed Windows Live OneCare and results are mixed. For the most part it runs quietly in the background providing, at least I think, real-time protection. The problem the last few starts has been MsMpEng.exe (Windows Defender) crippling my machine with heavy CPU utilization. I've Googled, Live- Searched, MS-Knowledge Base searched and found basically the same thing... High CPU... but no resolution. I dug through OneCare help and still didn't find anything. Therefore...