Image processing: tolerance of damaged files

Hi folks, I have an image processing module for converting & resizing uploaded images. My customer has 1000s of images from various sources, and a significant percentage are not 100% correct. At present I am using ImageMagick, but it chokes if the image is in any way damaged. At present the customer has to load the images into PhotoShop and re-save, which seems to fix them most of the time. Do any of the other Linux libraries, such as Netpbm, handle damaged images more robustly? I would very much value any feedback - I don't have a lot of time for testing... Thanks -- Geoff Caplan Advantae Ltd