There is a conflict between the Drupal imagefield module and memcached statistics. If displaying memcached statistics is on and you try to upload a picture, it will result with "An HTTP error 0 occurred." error in Internet Explorer or a blank white page in Fire Fox. It will work perfectly fine, if you disable memcached statistics.
"An HTTP error 0 occurred." – Drupal image field module error when memcahced statistics are displayed.
20 Sep 2011 | by Marcin Pajdzik