I usually delete my firefox cookies.
Might be some that SpywareBlaster's database does not know.
Why run antispyware programs, to let them clean those when you can do it yourself?
Well, Noscript too, and maybe only allowing cookies from the site's server only.
And if wanting to be adfree while surfing, allow pics from the web page server only.
Simple, no need for even adblock or like extensions.
Running under limited user account is also an easy need not know much way of protection.