images couldn't be reached when the feed was uploaded

Hello!
   I generated product feeds through froogle plugin and I uploaded the product feeds to google,but I got a notification that products were uploaded but image fields can't be reached,
I have set the directory permission to read and write, and modify, These few of the image URL below

http://tolbam.com/content/images/thumbs/0001729_unisex-leather-cap_125.jpeg
http://tolbam.com/content/images/thumbs/0002637_ralph-lauren-mens-slim-fit-long-sleeved-shirt_125.jpeg
http://tolbam.com/content/images/thumbs/0000227_spinlock-dumbbell-handles_125.jpeg
http://tolbam.com/content/images/thumbs/0002638_ralph-lauren-mens-slim-fit-long-sleeved-shirt_125.jpeg
http://tolbam.com/content/images/thumbs/0000215_ultimate-leg-extension-machine_125.jpeg

I get 403 error when I tried accessing the image path.
403 - Forbidden: Access is denied.
You do not have permission to view this directory or page using the credentials that you supplied.

Please what could be the problem?
And how do I fix this?
Your urgent response needed.

I visited your website and do see the images are located in the path you stated, so all images are not having the problem.

I suggest that you again set permissions on the /content/images/thumbs/ folder, but this time, check the box that says "Allow permissions to propagate to all folders and files"...this will force permission change on every image in the folder.

Also...I noticed you are submitting the smaller version of your images to Google.
They do not like this. They want you to submit the best quality/highest resolution version of your product images.