Currently I'm using both IE-SpyAD and SpywareBlaster on my system. My real-time protection consists of AV, Firewall, Anti-Spam and WinPatrol Plus (along w/ manual XP tweaking) . a) is it necessary to have BOTH IE-SpyAD and SpywareBlaster? b) do they slow down the loading of web pages while surfing the internet? I'm unsure whether or not I need both of them installed on my system. I use Firefox as my browser....but the family uses Yahoo! SBC browser (based on IE engine). Thanks for your help.