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I am attempting to download a file with Firefox and I see this error:

C:\Users\Lynda\Desktop\Sample.psd.zip.part could not be saved, because the source file could not be read.

Try again later, or contact the server administrator.

I see this happen quite a bit and very sporadic from many different sites.

What is going on and why does this happen?

Note I am using Firefox 15, but have seen this error for several versions. Also I am on Windows 7 64-bit.

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Does it happen in a different browser? Have you tried reinstalling Firefox? What else have you tried? –  user3463 Jul 30 '12 at 2:46
@RandolphWest - Have not tried other browsers but I was attempting to update VLC and it gave me an error saying the download file was corrupted. Have not seen that error before and assume they are related. I will attempt to use another browser to nail down the error. And yes I have re-installed FF since this has happened. –  Lynda Jul 30 '12 at 4:21
Can you please test if this is a SourceForge problem? I've noticed that sometimes, the SF location you're directed to can time out on occasion. I know that VLC uses SF as their download partner. –  user3463 Jul 30 '12 at 4:32
@RandolphWest - This is more than a SF problem as I have seen it across many many sites. –  Lynda Jul 30 '12 at 16:15
Make sure you try all the steps in kb.mozillazine.org/Source_file_could_not_be_read . Also, you can try disabling the windows security policy check -- in "about:config", set "browser.download.manager.scanWhenDone" to false. –  William Oct 15 '12 at 4:45

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