When downloading stuff from an HTTP (1.0) server that does not send a Content-Length header, the download window will contain a couple of peculiarities: Progress: ... NaN % 100 of 0 kB downloaded Time: 0:-16 The dialog should handle this by just showing the bytes downloaded, time elapsed, and perhaps some barber pole or similar.

Looks like bug 69037 which was a dup of bug 61947. regression?

could you pls provide a specific example that'd exhibit this bug? also, could you let me know what buildid and theme you are using? thx!

I've attached a perl script that acts as a dummy http server. Run this and connect to http://localhost:8910/ to see the bug in action. AFAIK the response is valid HTTP/1.1. The screenshot was taken while testing this server. In real life this bit me while talking to the Freenet fproxy (see http://freenetproject.org/), but testing with my dummy server is obviously much easier than setting up a Freenet node. BTW, this does resemble 69037, but is not at all like 61947. Hmm.

Forgot to note that I see this on build id 2001052122.

Do you see the same (or similar) results when you right-click on a link to such content and choose "Save link as..."? Thanks.

No, the problem manifests itself only when going through the "what should mozilla do with this file" dialog. Regardless of whether you choose to save or launch a helper, there. "Save Link As..." brings up a slightly different progress dialog, which behaves as expected (1 of ??kB; barber pole). All with the modern theme. Just retested with today's build.

confirming per reporter.

*** This bug has been marked as a duplicate of 84410 ***

ah, yes!