Permission denied

I'm probably forgetting something. I set write permissions to the folder, yet when I execute the feed, I get the errors:

# warning: fopen(/www/docs/site/mls/files/photos/20080624204605170059000000_1.jpg) [function.fopen]: failed to open stream: Permission denied in /www/docs/site/vielerets/common/download.php on line 3614.
# warning: fwrite(): supplied argument is not a valid stream resource in /www/docs/site/vielerets/common/download.php on line 3615.
# warning: fclose(): supplied argument is not a valid stream resource in /www/docs/site/vielerets/common/download.php on line 3616.
# warning: Invalid argument supplied for foreach() in /www/docs/site/mls/sites/all/modules/mls/viele_download.php on line 435.