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I downloaded FF4 RC. Launching FFsetup.exe crashed: "File is corrupt". I downloaded FF 4 RC 6 times, always same problem.

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I downloaded FF4 RC yesterday. Launching FFsetup.exe crashed: "File is corrupt". I downloaded FF 4 RC 6 times, always same problem. I downloaded another language verison, same problem.

I downloaded FF4 RC yesterday. Launching FFsetup.exe crashed: "File is corrupt". I downloaded FF 4 RC 6 times, always same problem. I downloaded another language verison, same problem.

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Today I finally installed FF 4 RC . I don't know where was a mistake , it was OK today . I am disappointed at FF 4 slowness. I thought that version 4 will be faster than 3 , isn't , at least not in the version of RC