The answer is very similar to checking md5sum from command line:
doofus@linux-#$%^&:~/Download> sha1sum openSUSE-11.1-Beta5-DVD-x86_64.iso
81113cc5201bcfcfb52e1a61d49ecb1490572a82 openSUSE-11.1-Beta5-DVD-x86_64.iso
doofus@linux-#$%^&:~/Download> md5sum openSUSE-11.1-Beta5-DVD-x86_64.iso
793e487eb299df6bede87de3d722cc6f openSUSE-11.1-Beta5-DVD-x86_64.iso
Both of which match so the error is in error.:’(:
sarcastic: