OK it seems to be just in IE, firefox displays the page fine.
Have tried from 3 different machines and IE displays the page incorrectly on all 3.
When you go http://www.howtoforge.com/node?from=2
if you change the node to any value between 3 and 12, the same happens
Starting at any other node appears to display the page fine.
I have checked the source and can't see any difference between the above posts and the ones that display OK (as a starting point)