Every since we turned on suPHP; we cannot upload images? Re-saving a copying is restricted.
9:30 pm on Apr 22, 2010 (gmt 0)
suPHP causes all PHP scripts to be executed under the user rights of the owner of the script. If images were stored by PHP when PHP was working as another Linux user, it may be impossible to overwrite old files with an PHP working under the new user credentials if the file permissions of those files only allow write access by the original file owner. Only the original file owner or the root user can modify or delete such files.