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Why won't my Vista machine accept 3.6.10?

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I have no problem downloading the browser, but when I try to run the download I get the message that (a) the file does not have a valid digital signature that verifes its publisher, and (b) if you try to run it anyway, it says the file is corrupt.

I have no problem downloading the browser, but when I try to run the download I get the message that (a) the file does not have a valid digital signature that verifes its publisher, and (b) if you try to run it anyway, it says the file is corrupt.

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It is possible that your anti-virus software is corrupting the downloaded files or otherwise interfering with downloading files by Firefox.

You can try to disable the real-time (live) scanning of files in your anti-virus software temporarily to see if that makes downloading work.

See http://kb.mozillazine.org/Unable_to_save_or_download_files