I came to much the same conclusions as yourself, Diablo, but, though I'm interested, my tech knowledge is limited so I'm not as confident about my system security as I'd like to be.
I re-ran the same tests and came up clean as a whistle, but if InFinRetirement has found a security hole I'd sure like to know about it.
GRC promises further development on a couple of products - one is the Nanoprobe technology and from that I think there will be a proggy that quickly tests all 65,532 ports. Also an improved Optout (advertisement spyware detector) is supposed to be on the way. While waiting for the Optout development, you might like to try AdAware from Lavasoft at
www.lavasoft.de .
Cheers
AA