Question about McAfee On-Access Scan Statistic Screen... (McAfee Users Please)?

I have had some things that were detected and deleted as well as some file actions blocked. I was just curious if it could be due to me searching some websites since I believe that could be why due to past observations it seems. Just wondering if web surfing will do it? Please don't waste my time telling me to get AVG etc, McAfee has worked great for me. Thanks.