Images Not Loading

Joonla! 2.5 site running latest version of HikaShop, PHP, IE, Firefox, etc.

Whenever trying to load an image of any filesize, resolution or filetype, into any part of the application (including individual items and categories, etc.) screen clears and presents an error screen:

The connection was reset
The connection to the server was reset while the page was loading.
The site could be temporarily unavailable or too busy. Try again in a few
moments.
If you are unable to load any pages, check your computer's network
connection.
If your computer or network is protected by a firewall or proxy, make sure
that Firefox is permitted to access the Web.

Are you sure that the problem don't come your server configuration ?
Try to open an images with another component on your website, and see if the error appear.

I would not have reported the problem here if it was happening with other components. JoomGallery, for example, works fine, as do all other installed components.

Have you edited any views ?
For example, "product / show_block_img", because you maybe have an infinite loop.

No views edited.

Disappointing...