IE6, oh how you destroy my will to code.
1st Problem:
List item numbers dissapear in IE6.
Solution:
ol { margin: 0; padding: 0; }
ol li { margin: 0 2em 0 2.5em; padding: 0 }
2nd Problem:
List item numbers are all set to 1.
Solution:
ol li { zoom: 0; }