MSE is lame. I've cleaned up numerous boxes whose owners depended on MSE, includng my own hubby's. Just about worn out my MBAM and TDSSKill CDs getting rid of crap MSE never caught.
You Win-Doze guys want decent free security, check out Comodo or Avast or Kapersky.
Edit to add:
Obviously, don't click on an ad here (or just about anywhere on da Interwebz).
And.....this is another reason I don't hang out here so much anymore.
Yep. MSE is often ineffective.
Kaspersky is good, but it's not free. AVG is good too.
I did some more digging, and found out that Google is causing the alarms. And best I can tell it is false alarming over one of the scripts in the HC pages.