If you’re running Windows XP and want to protect your computer from those nasty viruses, it’s advisable to run a virus protection program. I have a MacBook and I’m running Windows XP in my Parallels desktop. I installed and subscribed to Kaspersky Internet Security. Then I decided to add the free version of AVG for even more security.

Over time I noticed my computer ran slower and slower, especially when using QuickBooks. Suddenly QuickBooks would no longer open. Online research told me nothing. QuickBooks wanted about $60 for help. I opted not to call them. Out of desperation I paid $30 to Parallels only to find out that this was a Windows problem. After an hour of trying many things we discovered that running more than one virus protection program at the same time was not a good idea.

Now I only run Kaspersky and my computer is zippy once again. Lesson learned.