XP,dsl, have all updates, ran antivirus, spyware, ad-aware, also in safe mode. Did shellEXView and it worked for a short time. Ran WD HD diagnostics, no problems. Some of my usual sited work at perfect speed, others very slow. I am the point where I tried to format the HD but it keeps telling me something is in use, nor will it let me run checkdisk "fix file errors automatically". I'd be happy if I could simply repair XP via disk, if not I'll format if thats the solution? If I have to format, would it be better to try to do it through XP or the HD software? Thanks.