Results from Spybot:

HotsearchBar: Temporary file (File)

Windows Security Center.FirewallDisableNotify: Settings (Registry change)

Windows Security Center.AntiVirusDisableNotify: Settings (Registry change)

Advertising.com: Tracking cookie (Internet Explorer: Owner)

Advertising.com: Tracking cookie (Internet Explorer: Owner)

ValueClick: Tracking cookie (Internet Explorer: Owner)

MediaPlex: Tracking cookie (Internet Explorer: Owner)