I have an ongoing problem with doubleclick specifically http//ebay.doubleclick.net/adi/ebay.us. When I roam around certain portions of myeBay this version of double click keeps popping up on the "Back" button preventing me from going back to the real previous site. I find that I have to push "Back" a number of times before i can reach the intended site. I run Ad-aware and SpyBot to get rid of this and am assured that Doubleclick is removed but it keeps coming back. So I installed SpywareBlaster and selected "Enable All Protection" and confirmed that all 4 Doubleclicks are protected against. Nevertheless, http//ebay.doubleclick.net/adi/ebay.us keeps coming back. Can you please help me resolve this threat. Thanks.