I have a late 2007 MBP, bought one of the cheap Ebay caddy's (PATA). Installed a new 500gb drive into the caddy, everything went smoothly. When I booted up though, I got this error popup after I logged in, "The disk you inserted was not readable by this computer." But, once I went to Disk Utility, the disk was there and I was able to create a new volume. When I started moving some files over to the volume, everything seemed fine, until suddenly everything froze up. The trackpad went totally unresponsive, and pressing a key on the keyboard once was like holding it down. I had to hold down the power button to shut down. On restart, the drive was nowhere to be found. Restarted again, the drive showed up this time, but when I tried to go to Disk Utility, the same freezing occurred again. I popped the drive back out and plugged it into another computer, and it seems to be working fine. Has anyone had a similar issue with this setup? Not sure if I should buy a new caddy, or if maybe something else is the problem.