I have a 300 gb seagate set in an aftermarket case. This case has its own power supply and connects to a Vista Home Premium computer I have via a IDE to USB connection. Lately the drive has been disconnecting itself, but the drive stays powered on. I could turn off the power switch to the drive, then turn it back on and it would show up again in Windows Explorer. There were no error messages listed in Event Viewer, etc. when this happenes. Last night the drive disconnected again, but when I went to turn it on again, it froze Windows Explorer. All the other applications were not frozen, meaning I could open Word or the Internet, but if I switched back to My Computer it would show (Not Responding) at the top of the window. If I turned the drive power off, My Computer would show up as normal. Again, no logs in Event Viewer. I thought this was originally an issue with loading Vista on the PC, so I looked for every Vista USB Driver and hotfix in existance to try and correct it. After loading all of them, no luck. Long Story short, I have tried connecting this drive to 2 other laptops, 1 Vista and 1 XP Pro with no luck. Again, all other apps work fine, but any Explorer apps freeze. Except Device Manager shows USB Mass Storage device is working properly. Any ideas? My Warranty just expired on Monday . . . Ugh . . .