Not sure if anyone else is seeing this, but I am experiencing this on two laptops, both of which were recently upgraded. They are both running cooking.
"tazusb iso2usb..." using the latest cooking iso throws a segmentation fault.
"tazusb gen-liveusb..." using the latest cooking iso fails with an error related to mounting.
Also, "mount -o loop something.iso /media/cdrom" results in a few text files showing up at the mount point, instead of the contents of the iso. This is true even for non-slitaz ISOs.