I tried plugging the hd into other computer with vista, same issue, says the hd needs formated "do you want to do this now?".
Here's the weird thing, I went out and bought a new external, borrowed buddy's hd with my files on it and copied them to the new drive. Buddy comes to work today and says, same thing happened to his harddrive (which is also an external)! I ran virus scan on the new drive, and came up with nothing. I then formated my old external, which I am now in the process of recoping my files onto for backup! I never had any issues with my origional external until I got some files from my buddy's harddrive at work. Now his is screwed! One other thing I looked in disk manager, and seen the Maxtor driver for his hd, I uninstalled it, but when I reboot it picks it up again!