I am not sure when and how that happen but when I visualize my monthly archive posts (archive category is fine), the layout is aligned left and the background image does not show. I checked the archive.php and loop.php but I can not find the problem.
Here is how each page looks: http://www.djpromo.nl/wordpress/?cat=5
And here is how archive by month is displayed: http://www.djpromo.nl/wordpress/?m=201002
I would be very grateful if someone who encountered the same issue could help me out.
Thank you in advance.