Thread:Project:Support desk/checkImages.php script results in missing all images (MW 1.19)

After upgrading from 1.18.3 to 1.19 the checkImages.php script does not work properly any more. php ./checkImages.php results in img1.png: missing img2.jpg: missing Good images: 0/2

The images are all ok in the wiki itself.

Another remark: Since 1.19 it seems that thumbnails are created by using "/tmp" as temporary dir. This is important to know if you use PHP opendir parameter.

My system:
 * MediaWiki 1.19.0
 * PHP 5.3.10 (apache2handler)
 * MySQL 5.5.16