I Use Spybot S&D
But it is important to 'Disable' the 'Bug Report'
Select 'Advanced Mode'
Then you will see 'Settings' click on 'Settings'
Then in the 'Settings' category select 'Settings'
Then scroll own until you see 'Bug Report'
'Uncheck' all of the boxes in the 'Bug Report' category
Otherwise you will be uploading the detailed results of your scans of your hard drive to the person why made Spybot S&D