The behaviors are substantially the same between mint 5 xfce and mint 6 xfce rc1
Firstly, the floppy module is not loaded. Not really a problem since not many floppies any more.
Secondly, the icon on the desk top and short cut in Thunar have only Mount and Eject as the right click options.
In Slackware derived Zenwalk, I see that there is a choice of Mount and Unmount.
Thirdly, the floppy icon in the places on my lower panel, has right click options of Mount, Mount and open and after mounting it gives the choice of unmount.
In both versions the places icon works perfectly. So I guess that is what I will use unless I want to mount manually in CLI.
When you try to use the Eject option on the other icons, you get an error: Unable to eject, last error: Invalid command. The floppy is unmounted but after that the mount choice is grayed out in the desktop and shortcut icon.
The difference between Mint 5 and Mint 6 is that in 6 there is a nice pop up message in the lower right corner saying writing data and safe to eject the floppy, when you use unmount from the places icon.
I am curious what code runs the floppy icon. Is it part of xfce or some script some where. I am guessing that it is tied in with the HAL and udev thing because when I am root I can see a "hal mtab" and lock file in the media folder.
I was interested enough in this that I tried to research how the floppy icon works but it seems that it is only known to the initiated or those who read source code.....
I have learned to love how linux plays on old but venerable hardware. It's just a little sad that something as old as a floppy mounting icon could break like this.