Have you programmed the same base location for all of the artwork, or can you change it for individual images or image categories?
The reason I ask is that I'm willing to host some images over at www.dumbentia.com (especially if it means adding some of the new art that DexX and others have created). I'm not paying for bandwith and I've got some moderately beefy service (Virtual Server A at virtualhosting.com), so it's worth a test, perhaps.
Of course, I also understand if you don't want to do this, since it puts elements of the site out of your control and you don't know me from Adam.
...Trot and Cap'n Bill were free from anxiety and care. Button-Bright never worried about anything. The Scarecrow, not being able to sleep, looked out of the window and tried to count the stars.