Any issues to one's hard drive or OS to have anti virus running in the backround and then fire up TDS and run both simultaneously? My HD makes some interesting grinding sounds when I run both. Is there a pdf help file available for TDS? I like to print out help files and read off of dead trees instead of a screen. I was notified of files changing after running CRC32. I extracted the changes read it then saved it. What does one look for when reading the changes?