Hello, Thank you so much in advance for reading this and offering any advice you have. I have a macbook pro 13 inch that I purchased in 2009. It was working fine, maybe slowing down a bit, until I installed the last software update. I had turned my laptop off, and when I turned it back on, all of my settings on the home page were gone. It looks like a factory reset to the original background and application bar at the bottom, but all of my content seems to be here. I ran a check for the flash trojan and it found nothing. I ran Dr. WebLight and it found nothing. I'm running Sophos now but have not seen any alerts yet. My technical skills are not advanced so I have no idea what's wrong. Please advise. Thanks!