EDIT: Actually, for some reason, the JPG thumbnail looks black to me. Is this the same for everyone else or can you all see the thumbnail properly? If it's the image that's messed up, fix it and I'll approve this. If it's just my computer sucking and others can confirm that the image is fine, I'll approve this right away.
it appears REALLY dark for me aswell, but if you click on the image.. the original size version... is ok, so this looks like a bug of the forum software (which generates the thumbnails) to me.