Several students have reported that they cannot upload files for an assignment. They go through the process OK, select the file and it shows up in the moodle box correctly, then push upload. The response is "File Not Found"
These same students can do everything else including attach files to forum posts.
I have seen this with Internet Explorer once, and fixed it by restarting explorer.
I believe that the affected students are running windows XP and some flavor of IE. For them, restarting IE does not fix the problem.
Any suggestions on where to look to solve this?