Hello , I read several posts in referenced to PDF MIME type change for Firefox 2 , but I am having a problem with zip files attachment upload in Firefox 6.0.2 . In any other browser it uploads the files but Firefox shows empty entry which than results in File does not exist once the download link is clicked.

I also tried new 2.5 SVN on clean 1.5 install with same issue

K2  2.4.1

Joomla 1.5.23