New images are not displays with "wp_get_attachment_image".

After update image,new image is not displays. Only the name of the old image.
http://img710.imageshack.us/img710/7113/thumbnailz.gif

<a href="http://localhost/wass/?p=153" rel="bookmark"><img width="120" height="120" src="http://localhost/wass/wp-content/uploads/2009/12/IMGP0359-120x120.jpg" class="attachment-120x120" alt="IMGP0359" title="IMGP0359" /></a>