Comment 2 for bug 491600

Yeah, it just looked a bit ugly, that's all. I'm looking at this from a non-tech user point of view. Someone wanting to test drive an Ubuntu iso might give up after seeing that, not realising the image is missing but thinking something is broken at their end.

Maybe do an http HEAD on the file first to see if it's there. If not, give up with a nice error. If it is, start rsync/wget/whatever.