Shopwit

Using Internet Explorer 9.

When on sites mostly such as Amazon after a short time a pop-up in the lower left shows ads 'Shopwit' and popups occur and really slow down my machine.  I un-installed the app, checked all IE options disabling most options/add-ins.  I ran my Norton 360, downloaded and ran Power Eraser from the Norton website.  Each said nothing found.  I also followed all directions on the Norton website about C:\Windows\System32\drivers\etc\host (did find something to remove there).


Nothing has stopped this malware....how can I rid it once and for all?

WHY won't Norton products do this for me?????????????????