Latest news indicates a release of KNOPPIX 4.0 on DVD, stating that 9GB of uncompressed data is provided.

This willl be a big, big.big KNOPPIX release!!!!

It might be that the cloop file is provided at twice 2GB...thus is set at 4GB. This would accomodate systems limited to 4GB FAT related setups.

Actual full sized DVD is 4.4GB.