Firefox add-on trying to create a registry key

I know nothing about computers! I have Norton internet 2012 and have done the live update to make it compatible with Firefox 12.0 which I am using. Everything is working fine and my Norton toolbar is intact! I am using a Firefox add-on called "Browser Protect" and it seems to be working great.

    I was looking at my Norton history and every 10-15 seconds Norton is blocking an attempt by "Browser Protect" from generating a registry key. I have no idea what that means, or where to look for a solution. Is this an issue that needs addressed? Is this continuous "attack/block" every few seconds affecting my performance or the overall well being of my system?

                                       thank you,

                                            lige perry

p.s. excuse me if this is addressed elsewhere in the forum. I am new here but I did spend about an hour lokking around here for a thread addressing this situation without any luck.