I have a 2011 Mac Mini hooked to my TV as a HTPC. Runs fine, never had any issues. I have Transmission running and when the files are done, I copy them over to an external drive. Been doing this for about a year with no issues. Today I went to copy over 3 files (total size 1.01GB) and it stopped at 8mb, then jumped to 16mb after about a minute, then finder stops responding and I have to re-launch, or power off. I thought it was the drive, so I unplugged it and tried transferring some files from my MacBook, they worked fine. Also tried going from my Mini to a different external drive and got the same issue. Tried copying and pasting from the folder to the desktop, same issue. Keeps hanging after a few seconds the freezes. I decided to upgrade to Mountain Lion (was on Lion before), and the issue remains the same. I have reset the PRAM, repaired permissions, tried copying files over ethernet, nothing. I've tried different files too and they all hang after a few seconds. Is there a problem with the internal hard drive? Any ideas whats causing this? Accessing the files seems to be no problem. Opened a video in Quicktime and it ran fine. Please help! [Update] - Tried creating a new user and copying a file there, did not work. Also tried using the terminal command "cp" to copy a file, still no luck. It seems to hang at the same place every time. [Update 2] - So I tried Carbon Copy Cloner, and it was no help. Transferred just as slow and kept hanging and freezing. So I found an external drive, formatted it, partitioned it and created a bootable partition of Mountain Lion. I booted into that on my Mac Mini and tried to copy the files. Same problem! It even hangs in the exact same spot 25.2MB. I am out of ideas. Please someone help!