I often run into this problem since I bought a Apple Macbook Pro when using Time Machine to safeguard my hard drive through a full backup.

I noticed that it would take hours, sometime never finishing if I just try to delete the folder through Finder on the Time Machine drive.

Instead, I found a command line solution.. but be warned don’t do this unless you know what you are doing!

Steps:

1. Open Terminal
2. Run

   sudo fsaclctl -p /Volumes/ -d

   – this simply disables ACL on this volume

3. Run

   sudo find . -maxdepth 1 -ctime +1 -exec rm -rfv {} \;