Norton firewall started blocking Chrome

I just tried to open Chrome on my Windows 7 PC, just like I have every day for the past year (or however long it's been since Firefox and Norton toolbar stopped playing nice). Norton firewall now pops up saying Chrome is not trustworthy since it's less than a week old, has very few users, and is unproven. I know that Chrome updates itself all the time, but have a hard time believing the there are less than five users. Even if it did just update itself this morning, seems like the trustworthiness and user base would build to the thousands within a matter of minutes, considering how widely used it is. Just wondering if anyone else has seen this behavior just today.