Thank you very much for the download. Installed nicely on Ubuntu system. Anybody new to Ubuntu or Linux can easily install this. Download file to your desktop, right click, extract with default (top line on right click menu I believe). A new window will open listing all the gradient files (.ggr) in the download, select them all, extract them to /.gimp-2.2/gradients
which is same as /home/username/.gimp-2.2/gradients. Make sure you're options are set to view hidden files.
-Ang
Installed nicely on Linux - Ubuntu