Forgive my ignorance about computers. I have had a lot of people in and out over the holidays and when I did a history, I discovered an entire day was missing. When I hit the "Yesterday" tag, absolutely nothing showed. Further, I noticed my recycle bin was empty. So, I bought file-saver and restored my files. Files for the day before in the afternoon also were restored. The history showed a lot of things disabled prior to the questionable sites being visited. My guess is so that the sites could not send popups or emails to my computer. Here are my questions: 1. Is there anyway for me to find out when my computer was altered? (recycle bin dumped, history dumped) 2. Is there any way I could have "false" history on my computer? Or even delayed history (some one was visiting porn sites earlier in the day)? I have blue-tooth, could this influence anything? 3. Can you delete history that has not happend yet? For example, could the person who visited porn earlier in the day have tried to delete it and affected the future of the computer? I know it is a stretch. I asked the person who was on the computer at the time the history shows the second set of porn just to not do it on my computer. I am a psychologist and this is my professional computer--I don't want stuff popping up with my patients. He was the only other person here at that time. He swears he did not do it. I am guessing he is just is in extreme denial, but I want to be fair. Thanks for any help you can give me.