User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.4) Gecko/20030706 Build Identifier: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.4) Gecko/20030706 If a download is interrupted it can only be resumed if downloaded from the same server. Should be able to resume from a different source. Reproducible: Always Steps to Reproduce: 1. Start downloading a large file (PSP8 in the above URL, for example) 2. Have your connection interrupted part way through. 3. Try downloading same file again from a different server. Actual Results: Download starts over at the beginning. Expected Results: Recognize the file and at least offer to resume. This problem will likely come up most often when attempting large problematic downloads that are available from various mirrors, or from sites that pick from several servers for you. I'd speculate it would be easier to fix if bug 69938 were resolved such that downloads went directly to the chosen destination, and are not deleted if the download fails or is cancelled. I don't use the download manager, so I don't know if this is correctly attributed. Just a best guess.

This has nothing to do with downloading from a different server. You can't resume a download from where you left off from the *same* server either. *** This bug has been marked as a duplicate of 18004 ***

Whatchu talkin' 'bout, Willis? Moz. resumes downloads from the same URL if the partial download is still in the cache. I just tried it at http://www.climateprediction.net/download/participate.php and it works fine. What I'm after with this bug is to remove the URL dependancy from the equation. If Bug 18004 covers this, fine.