Problem just started a few days ago. When ever I log onto the web, I am receiving an intermitten radio station coming thru my speakers in the background. I have used "Malware Bytes Anti Malware" but no success. I have changed speakers, used headphones but to no avail. I am very certain this is not a bleed over thru my speakers from the radio station. I do have an anti-virus running (AVG) but this has not stopped the radio bleed thru. I am using a Vista operating system with Firefox. Any advice?