well simply states that you have been browsing alot on porn sites hehehe!! downloading stuff without running it though you AV..
Look for your Anti Virus or AV software ussually its AVG or NOD3 or what ever you have as an Anti Virus
if you found your AV software click run then it will ask you if which part of your computer to scan and clean select all
(includes disk drive Drive D drive C etc..)
then click scan and clean
there are 3 buttons there....... Scan and Scan and Clean and Cancel
click scan and clean
it will take a while but works like magic
my advice don't go to websites that looks inticing to go through like parrishilton nude blah blah...