Comment 2 for bug 1037703

> # cat /etc/crypttab | grep -v '^#' | grep -v '^$'
> encriptado /dev/sda6
> cryptswap /dev/sda5 /dev/urandom swap

This doesn't look like a well-formatted crypttab entry. The format of crypttab is <target name> <source device> <key file> <options>, and all fields are mandatory. So since cryptsetup can't parse the line, it never unlocks it (or prompts you for the key to unlock it), and mountall waits forever for the device.