On a few sites I've been to,while I've been browsing,I've had a security alert. 'Warning - your computer is attempting to communicate private information.type.Bank Account.What action do you wish Norton Internet Security to take?In a little box - Block(recommended). When I visit the alert tracker log,it gives the destination. http://########/advertising/adlog.php?bannerid=etc. What is this all about?Is it common practice?Who does one complain to? I don't use this computer for anything else than trading,but it's still worrying.