I have recently upgraded to wordpress 3.3.1. For some unknown reason on my single post pages (single.php) a margin of around 20px is added to the top of the header on these pages only. Nothing has been changed in the css since before the upgrade when this problem did not occur.
This is my home page http://www.altdigital.co.uk with correct amount of margin at top
and this is a single post page http://www.altdigital.co.uk/temp/?p=524
Is anyone else having this problem? and does anyone know how to fix it?