Chrome 14 can't displayed attached .swf file on a page

1. Finding

After attaching .swf file to a page. Confluence couldn't show the attached .swf file using Multimedia macro. Instead of displaying, it will be returned as Missing Plug-In. It showed as below.

2. Cause

The macro generates different mime type when it is displayed as html on Chrome 14. Instead of generated as type="application/x-shockwave-flash" it was generated as type="application/x-shockwave-flash2-preview" that cause it couldn't be displayed on Chrome 14.

3. Workaround

A. Remove the type particular line from mime.types file

1. Stop Confluence
2. Navigate to <confluence_dir>/confluence_WEB-INF/classes
3. Make a backup of mime.types file
4. Change the following line

   image/vnd.rn-realflash rf swf
   

   to this line

   image/vnd.rn-realflash rf 
   

5. Remove the following line from the mime.types

   application/x-shockwave-flash2-preview rf swf
   

6. Restart Confluence

B. Embed the file using html macro
Enable {{

}} macro, and insert macro in a page

{html}
<embed src="<attachment_path>/swf_file.swf">
</embed>
{html}