From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.3) Gecko/20010801 BuildID: 2001080104 When uploading a file in an HTML form, the browser leaves around a temporary file of the form /tmp/formpost-<N> containing the entire contents of the file you are uploading. This file does not appear to be deleted, at least during the lifetime of the browser process. If you upload a bunch of big files, you are left with a bunch of the big temporary files in /tmp. Reproducible: Always Steps to Reproduce: 1.Find a web page with form with: <INPUT TYPE="file"... 2.Upload a file using that form 3.look in /tmp Actual Results: you get a file of the for /tmp/formpost-<N> Expected Results: Mozilla should delete the temporary file when it's done, for the sake of disk space and security and sanity.

Ah, looking at the source, i see that the file deletion code is commented out: http://lxr.mozilla.org/seamonkey/source/layout/html/forms/src/nsFormFrame.cpp#949 That would explain it... :-)

Dupe. *** This bug has been marked as a duplicate of 15320 ***

v.