EXE Files downloaded with DownThemAll! in Firefox are not valid Win32 applications

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EXE Files downloaded with DownThemAll! in Firefox are not valid Win32 applications
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ANSWER:

After enabling logging in the DTA extension, and going through the logs, there were error messages generated by YSlow. After disabling YSlow and restarting Firefox everything works beautifully again.

by travis from http://superuser.com/questions/420778