Computer Associates is known as one of the most horrible companies to deal with in the entire software industry. One of their business programs is notorious for corrupting data. I divorced them 12 years ago, and 2 years ago, they bought the business program I am using. They pulled a lot of the features, doubled the price, and now require an additional 30% fee annually for Patches and minor upgrades(read bug fixes). At 60% support fee, you will be able to access a list of known bugs and fixes. For 90% of software fee annually, you can get telephone support.

Zone alarm is/was incompatable with a number of programs.