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What do I do when I see something like this? It really sucks if you want to download something and this one shows up.

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Yeah I hate it when I come across stuff like that too. But you just have to live with it or complain to the owner of the site. – Nori Dec 1 '10 at 21:20
up vote 9 down vote accepted

The most likely explanation is that the server you are downloading from isn't telling Firefox (or any other browser) the size of the file, so it cannot compute the estimated time.

The only action you can take is to complain to the administrator of the website. You may tell their support that they are missing the Content-Length header when sending you the file.

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