I update my installation of sabayon 5 at least once a week. Two or maybe three weeks appeared the following two problems:
First, I can not logout from LXDE session, in fact I can not restart X server, because the computer freezes with the CPU busy.
Second, I can not turn off the computer properly with the command "init 0" or "shutdown", the computer freezes with CPU busy when the message "Remounting filesystems as read-only .." appears. Otherwise everything is normal when I restart with the command "init 6" or "reboot".