Hi John, regarding your bug report "cramfsprogs: Extremely inefficient performance on large trees": mkfs.cramfs (shipped with the util-linux package) already uses md5sums the way you suggest them. Can you confirm that mkfs.cramfs fixes your problem? cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed