I've updated to the new blogger layout. This provides a much better archive option, using a collapsable tree view (so it's easier to find past posts) and <pre> text now wraps, instead of spilling into the sidebar.
The only thing I don't like is that the new default text style for posts is a little cramped - needs a little more line spacing IMO. If I knew about CSS I could probably fiddle with this in the tempate (but life's too short...)
Finally, safari doesn't quite work with the new layout editor, but firefox is fine.