Hi, We have been working with a relatively old distribution that does not have the purge datasets feature in the history menu. We just pulled a new galaxy distribution, and I was trying to test this feature. I tried many scenarios and I always get "0 datasets have been deleted permanently" and the used disk space that appears at the top right of the screen does not change. I read the documentation on dependencies and when a dataset gets purged. So, I created a new history, and uploaded a file from my local machine. As a result, I could see that my used disk space increased. Then I deleted this item from my history and selected purge deleted datasets, but I got the same thing as described above. I also selected Delete history Permanently, but the disk space did not go down. What am I missing? Thanks, Sahar Al Seesi Postdoctoral Fellow Computer Science and Engineering University of Connecticut