I have Mc Afee Total Protection, and some time ago I downloaded and installed a copy of ccleaner. It turns out that ccleaner prevented Mc Affee from updating the virus signatures and I had to re-install. I have downloaded and installed Open Office which works well with Mc Affee. So here goes the question: What sorts of software do I need to avoid in order to keep from having to re-install Mc Affee?