Not very good security results from Comodo Leak Tests

I run a firewall leak test provided by Comodo and I found out that my system was vulnerable to the "impersonation: coat" test.

The description for that test is:

What does it do ? Tries use rename itself as the default browser in memory and connect to the Internet.
What is the risk ? Firewalls may think the actual process behind the Internet connection request is the trusted browser.

All other leak tests were unable to run because Norton was removing the required .dll files. I guess that is a good thing. I still though tried to run them: I temporarily disabled auto-protect, extracted the compressed folder containing the tests, re-enabled auto-protect and then run the test. The results are displayed bellow. More vulnerabilities appeared although program control and auto-protect were enabled.

Is there anything I should worry about? Are there any settings I can change to increase security, specially for the 'impersonation' test that failed completely?

Thanks,

John

secresults.png