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Why does Firefox download .docx files as octet-stream?

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When I try to open or download files that have the .docx extension FireFox 5.0.1 says they are octet-stream. Internet Explorer 8 opens and downloads the files correctly. Do I need to switch browsers or is there a easy "fix?"

When I try to open or download files that have the .docx extension FireFox 5.0.1 says they are octet-stream. Internet Explorer 8 opens and downloads the files correctly. Do I need to switch browsers or is there a easy "fix?"

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1) You really should update to Firefox 8.0.1 - there are many security fixes you are missing running version 5

2) It is up to the website to send the right headers. On what site is this occurring?

3) Threats don't make people want to help!

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As what kind of files does Firefox save the .docx files?

Firefox will always offer to save files that are send as application/octet-stream

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