CCleaner 2.05.555
Windows XP SP2
Internet Explorer 6
Avast 4.7 Home Edition
Comodo BOClean 4.25
SUPERAntiSpyware Free 4.0.1154
Checked email, visited some of sites I usually go to, such a this one. Have installed or downloaded nothing in the past few days.
Opened CCleaner and ran it as I usually do.