JList + Custom Cell Renderer

[Jack9]

Can anyone tell me why the renderer is called so many times (JList seems to call a renderer for every DefaultListModel element every time I add an element leading to n renderers for every new element. This makes it unsuitable for an irc-style messagelist) and why the bounds are all wonky on the custom cell renderer output, also why ensureIndexIsVisible(int) is not working for the unit test:http://pastebin.com/f37794b9