Cannot select multiple files in "File Upload" dialog

Cannot select multiple files in "File Upload" dialog

Hi,

I am evaluating a jquery plugin that allows users to upload multiple files (http://www.fyneworks.com/jquery/multiple-file-upload/#tab-Support). When I click on the "Browse" button on a demo, I get "File Upload" a dialog. However, I cannot select more than one files. I know it's not a big deal to most people, but I have a need to upload multiple files. So, this is like a show stopper for me.

This happens on both my Windows XP SP3 and fedora 11 boxes. Here is my Fedora version:
Linux saigon 2.6.30.10-105.2.23.fc11.i586 #1 SMP Thu Feb 11 06:51:26 UTC 2010 i686 i686 i386 GNU/Linux

I have googled to death and can't find any thing relevant.

Anybody experiences the same thing? Thanks.