I'm new here and i don't know if this is the right place to state this issue but here goes. I use ubuntu 10.10 and while creating a startup disk using my 16GB usb drive, i noticed that only a few ISOs i'm able to add, the rest even if i double click on them do not show up in the source disc image column. It worked fine with a kubuntu ISO and a linux mint ISO but not with fedora and arclinux. Any idea why? Any help would be appreciated.