If you click on "Upload More Files" from the Use step, Firefox gives you a resubmit warning: "To display this page, Firefox must send information that will repeat any action (such as a search or order confirmation) that was performed earlier."
Either the way this button functions should be changed, or the UploadWizard should perform a Post/Redirect/Get instead of a simple Post upon completing the Describe step. I imagine the first option would be simpler.
Version: unspecified
Severity: minor