Hi all~ So, a little background......last Friday my computer suddenly began running excruciatingly slow - just simply trying to connect to the web took several minutes, then navigating to the site I wanted was another 3 or more minutes. Trying to open ANY program was near impossible, downloading emails, etc. I have been a dedicated fan of Nod 32 for several years now. My subscription expired on 7/3/09, and I had downloaded and been testing the trial of version 4 for a week or so beforehand. Suddenly, nothing works properly. Up until that point I had not downloaded or installed any new programs. I run Windows XP Home Version on a Gateway laptop; to add to the frustration, my husbands computer (a generic desktop) runs the exact same OS with Nod32 v4 installed, and absolutely no problems with his computer. So I decided I had a virus. Reformatted my entire HD, restored a Norton Ghost backup from earlier in the month, and viola - everything is fine. That is, until I installed Nod32 v4, update it to the latest version (4.0.437.0)....HD nearly crashes and nothing works again. If I disable Real Time Fily System Protection, everything works just groovy again, but now I have no protection! Can anyone help, or should I just go back to version 3??