If a file is uploaded with a form (<input type=file> etc), the file is write-locked until the window or tab that made the upload gets closed (which is forever, since I never leave Mozilla :). How to reproduce (this is just an example, happens on any site): 1. Create a HTML file. 2. Go to http://validator.w3.org/file-upload.html 3. Upload HTML file from 1. from your harddisk to the validator (fill out <input> and submit form). 4. Try to write to the file on your harddisk used for uploading. Step 4 will fail until the tab (or window) is closed. You can even move on to totally different sites in that tab; the file stays write-locked. (Windows 98, build 2002041711)

I'm sure I've seen this elsewhere, dupe?

This has been fixed for a long time now. *** This bug has been marked as a duplicate of 126829 ***

verifying