[Lincs Yellowbelly]

I've been trying to upload some pictures into a post today, but for some reason cannot. All i get is the following message:

Warning: is_dir() [function.is-dir]: Stat failed for /home/wildabou/public_html/forums/attachments/1/0/3/9 (errno=13 - Permission denied) in /includes/functions_file.php on line 52

Warning: is_dir() [function.is-dir]: Stat failed for /home/wildabou/public_html/forums/attachments/1/0/3 (errno=13 - Permission denied) in /includes/functions_file.php on line 52

Warning: is_dir() [function.is-dir]: Stat failed for /home/wildabou/public_html/forums/attachments/1/0 (errno=13 - Permission denied) in /includes/functions_file.php on line 52

Any idea of the probs? the images are within the size limits