list + floats + block bug in IE6/7

This renders improperly when padding is undefined or 0px. When either padding or a border is set, it ends up rendering properly again.

padding: 0px

This renders improperly in IE6/7, with the "T" on a separate line above the other text.

• T
  his should be on one line.

padding: 1px

• T
  his should be on one line.