Other people heard that too:
If you don't have MBAM and SAS yet, please try to scan using the tools:
SUPERAntispyware (SAS) http://download.cnet.com/SuperAntiSpyware-Free-Edition/3000-8022_4-10523889.html
Malwarebytes Antimalware (MBAM) http://download.cnet.com/Malwarebytes-Anti-Malware/3000-8022_4-10804572.html
You might want to clean also the temporary internet files using CCleaner: http://www.ccleaner.com/download/builds
(choose the slim, no toolbar installer if you don't have CCleaner yet)
I've been getting some spurious audio messages. One says I have won a WalMart card. I've searched my HD high and low for any audio files .
These messages keep repeating.