There is an attachment issue with Firefox. When I click on any attachment that is not a known extension in Firefox in particular CDR & ZIP it opens directory in another tab -- known basically as gibberish. In addition if you use "Save Link as" you get a prompt for the PHP file name not the attachment name. I am using 2.0.0.1. Searching Google I have found this info:
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The underlying mechanism is this. File attachments can be served in two ways, depending on the Content-Disposition header sent by the server :
inline : IE or Firefox then tries to render the file in the browser window (through plugins or whatever)
attachment : IE or Firefox opens a dialog box offering the user to save the file on disk. Th default filename is correct because it is transmitted by the server in the Content-Disposition header.
So if you wish your users to be able to display attachments in the browser, you have to send a "Content-Disposition : inline" header.
Here comes the problem : if a user then wishes to save the file on disk instead of viewing it online, he generally right clicks the link and select "save link as...".
IE then sends an HTTP request to the server, looks at the response, extract the suggested filename from the headers (Content-Disposition), and pops up a save dialog box with the correct filename
Firefox developers don't want the user to wait for the server response before displaying the dialog box, so it guesses the filename from the URL and pops up a dialog box with the guessed filename, which generally then have a wrong extension (and/or filename)... For the above example, whatever the file type (video, pdf, ...), the default filename will always be "active.html". Firefox developers seem to want it to behave this way.
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I don't know if this represents the problem here, but I can save a link and override the filename, but lots of folks are confused. I am curious if Arron has see this elsewhere.. it's a pain. It works fine in IE 6 & 7