My home computer was built for me 6 or 7 years ago (uses XP). Lately, although I scan it regularly with good software to get rid of the Bad Guys, has been terribly slow doing EVERYTHING. I have an external hard drive for storage (150 GB) that I got at the same time. Put GOBS of stuff on it! a couple weeks ago I could access the external hard drive but not the file folder on it that housed all this stuff. Tried all I could and then I took it to my favorite geek. He was able to run some software on it and get it repaired. He also copied that big file onto a new (500 GB) hard drive. NOW, when I sign in to and use my home computer, everything it does is faster and easier. All old computers have glitches and idiosyncrasies but I am amazed at how well it works. It is possible that something wrong with the old external hard drive was affecting the computer, OR could it be something in the software on the new hard drive has helped the old computer? Boggles my mind!