Hello everyone

In the admin panel > Manage data libraries section I have an issue with deleting datasets.

When I click on each dataset's triangle menu and ask for deletion, everything is fine. But whenever I select datasets and ask for deletion with the drop down menu at the bottom of the page, Galaxy tells me I don't have the rights to delete them.

I get the following message:
"You are not authorized to delete any of the selected datasets."

Did I miss anything?

Thanks,
L-A