Searched this forum as well as Google about my issue, and found a 17-page thread on the Apple support forums, with no solution. Few instances on here. I bought my new 15" MBP recently, and performed a successful TM backup. After installing some apps, I tried backing up again, but the external hard drive ejects during backup. I get an error message saying that the backup failed, and that next time I should properly eject before disconnecting. Cable is not touched the entire time, even tried a few different cables. It's a 500GB Seagate FreeAgent Go, USB-powered. I'm going to try repairing the hdd tonight. I thought about replacing it, but from what I read on the Apple forum, it seems to be a widespread issue. Has anyone heard of this issue, and maybe a solution?