The Joomla! Forum™

When I first enter Joomla.com all the images are missing (the standard box with the red x).  If I go into any other tab (the Forum, for example) and return to the homepage the images are there.  This has been going on for a couple months now.  Any reason why?

The component I am developing has several custom classes that are required by both the frontend and adminstration area.  Is it recommended to copy the classes to both components/mycomponent and administrator/components/mycomonents or should I reference one from the other?