Forum OpenACS Q&A: Response to File upload failures

One of the problems here is clearly interface. The file upload feature violates Jakob Neilsen's first usability heuristic: Make the status of the system visible to the user. Ideally, you should have some sort of an upload progress bar that tells people how far along the upload is. If they see that the upload (or download) is working, they'll be less inclined to keep pressing that button.