Oh wow, you didn't respond to a few packets on some ports. Now you're unhackable. But wait! It responds to ping! Not so stealthed now are ya?
This test is completely useless to the "average" computer user who runs NONE of them services. Majority of people here probably don't run those services on them ports on their desktop.
No shit you don't respond to port 25, YOU DON'T HAVE A SMTPD. Even if port 25 was open, and if you had a smtpd it still wouldn't cause much concern (assuming you took time to secure it).
My $0.02 worth.