This may sound like a stupid question for many of you, so I apologize in advance if it is remedial. I have a question about the Google search list. When you type letters in to search for, past search listings appear in a scroll box below. Is it possible for search words to appear that have not been typed in? I do not recall entering many of the search words that appear, and I'm the only one using my computer. I wasn't sure if this might be a sign that I don't have adequate firewall protection, and the list is somehow being hijacked. Thanks.