Comment 10 for bug 489372

Fairly easy workaround:

Right click on the main menu and select Edit Menus.
Select a menu folder (I like to choose Other) and click New Item
Give it a name (Home Folder) and for the command enter: /home/username (replacing the word username with your own)
Click on the icon and select an appropriate folder icon (ex: /usr/share/icons/Humanity/places/48/folder_home.svg)
Click OK and drag that new menu item from the main menu to docky
I go back to Edit Menus and uncheck it so it remains hidden, but it will stay in your dock and won't show up with multiple icons